Alright, let's solve this math problem step by step. First, we have the number 630. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 245. So, we're going to take the number 630 and add it to itself 245 times.
Step 1: 0 + 630 = 630
Step 2: 630 + 630 = 1260
Step 3: 1260 + 630 = 1890
Step 4: 1890 + 630 = 2520
Step 5: 2520 + 630 = 3150
Step 6: 3150 + 630 = 3780
Step 7: 3780 + 630 = 4410
Step 8: 4410 + 630 = 5040
Step 9: 5040 + 630 = 5670
Step 10: 5670 + 630 = 6300
Step 11: 6300 + 630 = 6930
Step 12: 6930 + 630 = 7560
Step 13: 7560 + 630 = 8190
Step 14: 8190 + 630 = 8820
Step 15: 8820 + 630 = 9450
Step 16: 9450 + 630 = 10080
Step 17: 10080 + 630 = 10710
Step 18: 10710 + 630 = 11340
Step 19: 11340 + 630 = 11970
Step 20: 11970 + 630 = 12600
Step 21: 12600 + 630 = 13230
Step 22: 13230 + 630 = 13860
Step 23: 13860 + 630 = 14490
Step 24: 14490 + 630 = 15120
Step 25: 15120 + 630 = 15750
Step 26: 15750 + 630 = 16380
Step 27: 16380 + 630 = 17010
Step 28: 17010 + 630 = 17640
Step 29: 17640 + 630 = 18270
Step 30: 18270 + 630 = 18900
Step 31: 18900 + 630 = 19530
Step 32: 19530 + 630 = 20160
Step 33: 20160 + 630 = 20790
Step 34: 20790 + 630 = 21420
Step 35: 21420 + 630 = 22050
Step 36: 22050 + 630 = 22680
Step 37: 22680 + 630 = 23310
Step 38: 23310 + 630 = 23940
Step 39: 23940 + 630 = 24570
Step 40: 24570 + 630 = 25200
Step 41: 25200 + 630 = 25830
Step 42: 25830 + 630 = 26460
Step 43: 26460 + 630 = 27090
Step 44: 27090 + 630 = 27720
Step 45: 27720 + 630 = 28350
Step 46: 28350 + 630 = 28980
Step 47: 28980 + 630 = 29610
Step 48: 29610 + 630 = 30240
Step 49: 30240 + 630 = 30870
Step 50: 30870 + 630 = 31500
Step 51: 31500 + 630 = 32130
Step 52: 32130 + 630 = 32760
Step 53: 32760 + 630 = 33390
Step 54: 33390 + 630 = 34020
Step 55: 34020 + 630 = 34650
Step 56: 34650 + 630 = 35280
Step 57: 35280 + 630 = 35910
Step 58: 35910 + 630 = 36540
Step 59: 36540 + 630 = 37170
Step 60: 37170 + 630 = 37800
Step 61: 37800 + 630 = 38430
Step 62: 38430 + 630 = 39060
Step 63: 39060 + 630 = 39690
Step 64: 39690 + 630 = 40320
Step 65: 40320 + 630 = 40950
Step 66: 40950 + 630 = 41580
Step 67: 41580 + 630 = 42210
Step 68: 42210 + 630 = 42840
Step 69: 42840 + 630 = 43470
Step 70: 43470 + 630 = 44100
Step 71: 44100 + 630 = 44730
Step 72: 44730 + 630 = 45360
Step 73: 45360 + 630 = 45990
Step 74: 45990 + 630 = 46620
Step 75: 46620 + 630 = 47250
Step 76: 47250 + 630 = 47880
Step 77: 47880 + 630 = 48510
Step 78: 48510 + 630 = 49140
Step 79: 49140 + 630 = 49770
Step 80: 49770 + 630 = 50400
Step 81: 50400 + 630 = 51030
Step 82: 51030 + 630 = 51660
Step 83: 51660 + 630 = 52290
Step 84: 52290 + 630 = 52920
Step 85: 52920 + 630 = 53550
Step 86: 53550 + 630 = 54180
Step 87: 54180 + 630 = 54810
Step 88: 54810 + 630 = 55440
Step 89: 55440 + 630 = 56070
Step 90: 56070 + 630 = 56700
Step 91: 56700 + 630 = 57330
Step 92: 57330 + 630 = 57960
Step 93: 57960 + 630 = 58590
Step 94: 58590 + 630 = 59220
Step 95: 59220 + 630 = 59850
Step 96: 59850 + 630 = 60480
Step 97: 60480 + 630 = 61110
Step 98: 61110 + 630 = 61740
Step 99: 61740 + 630 = 62370
Step 100: 62370 + 630 = 63000
Step 101: 63000 + 630 = 63630
Step 102: 63630 + 630 = 64260
Step 103: 64260 + 630 = 64890
Step 104: 64890 + 630 = 65520
Step 105: 65520 + 630 = 66150
Step 106: 66150 + 630 = 66780
Step 107: 66780 + 630 = 67410
Step 108: 67410 + 630 = 68040
Step 109: 68040 + 630 = 68670
Step 110: 68670 + 630 = 69300
Step 111: 69300 + 630 = 69930
Step 112: 69930 + 630 = 70560
Step 113: 70560 + 630 = 71190
Step 114: 71190 + 630 = 71820
Step 115: 71820 + 630 = 72450
Step 116: 72450 + 630 = 73080
Step 117: 73080 + 630 = 73710
Step 118: 73710 + 630 = 74340
Step 119: 74340 + 630 = 74970
Step 120: 74970 + 630 = 75600
Step 121: 75600 + 630 = 76230
Step 122: 76230 + 630 = 76860
Step 123: 76860 + 630 = 77490
Step 124: 77490 + 630 = 78120
Step 125: 78120 + 630 = 78750
Step 126: 78750 + 630 = 79380
Step 127: 79380 + 630 = 80010
Step 128: 80010 + 630 = 80640
Step 129: 80640 + 630 = 81270
Step 130: 81270 + 630 = 81900
Step 131: 81900 + 630 = 82530
Step 132: 82530 + 630 = 83160
Step 133: 83160 + 630 = 83790
Step 134: 83790 + 630 = 84420
Step 135: 84420 + 630 = 85050
Step 136: 85050 + 630 = 85680
Step 137: 85680 + 630 = 86310
Step 138: 86310 + 630 = 86940
Step 139: 86940 + 630 = 87570
Step 140: 87570 + 630 = 88200
Step 141: 88200 + 630 = 88830
Step 142: 88830 + 630 = 89460
Step 143: 89460 + 630 = 90090
Step 144: 90090 + 630 = 90720
Step 145: 90720 + 630 = 91350
Step 146: 91350 + 630 = 91980
Step 147: 91980 + 630 = 92610
Step 148: 92610 + 630 = 93240
Step 149: 93240 + 630 = 93870
Step 150: 93870 + 630 = 94500
Step 151: 94500 + 630 = 95130
Step 152: 95130 + 630 = 95760
Step 153: 95760 + 630 = 96390
Step 154: 96390 + 630 = 97020
Step 155: 97020 + 630 = 97650
Step 156: 97650 + 630 = 98280
Step 157: 98280 + 630 = 98910
Step 158: 98910 + 630 = 99540
Step 159: 99540 + 630 = 100170
Step 160: 100170 + 630 = 100800
Step 161: 100800 + 630 = 101430
Step 162: 101430 + 630 = 102060
Step 163: 102060 + 630 = 102690
Step 164: 102690 + 630 = 103320
Step 165: 103320 + 630 = 103950
Step 166: 103950 + 630 = 104580
Step 167: 104580 + 630 = 105210
Step 168: 105210 + 630 = 105840
Step 169: 105840 + 630 = 106470
Step 170: 106470 + 630 = 107100
Step 171: 107100 + 630 = 107730
Step 172: 107730 + 630 = 108360
Step 173: 108360 + 630 = 108990
Step 174: 108990 + 630 = 109620
Step 175: 109620 + 630 = 110250
Step 176: 110250 + 630 = 110880
Step 177: 110880 + 630 = 111510
Step 178: 111510 + 630 = 112140
Step 179: 112140 + 630 = 112770
Step 180: 112770 + 630 = 113400
Step 181: 113400 + 630 = 114030
Step 182: 114030 + 630 = 114660
Step 183: 114660 + 630 = 115290
Step 184: 115290 + 630 = 115920
Step 185: 115920 + 630 = 116550
Step 186: 116550 + 630 = 117180
Step 187: 117180 + 630 = 117810
Step 188: 117810 + 630 = 118440
Step 189: 118440 + 630 = 119070
Step 190: 119070 + 630 = 119700
Step 191: 119700 + 630 = 120330
Step 192: 120330 + 630 = 120960
Step 193: 120960 + 630 = 121590
Step 194: 121590 + 630 = 122220
Step 195: 122220 + 630 = 122850
Step 196: 122850 + 630 = 123480
Step 197: 123480 + 630 = 124110
Step 198: 124110 + 630 = 124740
Step 199: 124740 + 630 = 125370
Step 200: 125370 + 630 = 126000
Step 201: 126000 + 630 = 126630
Step 202: 126630 + 630 = 127260
Step 203: 127260 + 630 = 127890
Step 204: 127890 + 630 = 128520
Step 205: 128520 + 630 = 129150
Step 206: 129150 + 630 = 129780
Step 207: 129780 + 630 = 130410
Step 208: 130410 + 630 = 131040
Step 209: 131040 + 630 = 131670
Step 210: 131670 + 630 = 132300
Step 211: 132300 + 630 = 132930
Step 212: 132930 + 630 = 133560
Step 213: 133560 + 630 = 134190
Step 214: 134190 + 630 = 134820
Step 215: 134820 + 630 = 135450
Step 216: 135450 + 630 = 136080
Step 217: 136080 + 630 = 136710
Step 218: 136710 + 630 = 137340
Step 219: 137340 + 630 = 137970
Step 220: 137970 + 630 = 138600
Step 221: 138600 + 630 = 139230
Step 222: 139230 + 630 = 139860
Step 223: 139860 + 630 = 140490
Step 224: 140490 + 630 = 141120
Step 225: 141120 + 630 = 141750
Step 226: 141750 + 630 = 142380
Step 227: 142380 + 630 = 143010
Step 228: 143010 + 630 = 143640
Step 229: 143640 + 630 = 144270
Step 230: 144270 + 630 = 144900
Step 231: 144900 + 630 = 145530
Step 232: 145530 + 630 = 146160
Step 233: 146160 + 630 = 146790
Step 234: 146790 + 630 = 147420
Step 235: 147420 + 630 = 148050
Step 236: 148050 + 630 = 148680
Step 237: 148680 + 630 = 149310
Step 238: 149310 + 630 = 149940
Step 239: 149940 + 630 = 150570
Step 240: 150570 + 630 = 151200
Step 241: 151200 + 630 = 151830
Step 242: 151830 + 630 = 152460
Step 243: 152460 + 630 = 153090
Step 244: 153090 + 630 = 153720
Step 245: 153720 + 630 = 154350

So, 630*245 = 154350