Alright, let's solve this math problem step by step. First, we have the number 648. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 242. So, we're going to take the number 648 and add it to itself 242 times.
Step 1: 0 + 648 = 648
Step 2: 648 + 648 = 1296
Step 3: 1296 + 648 = 1944
Step 4: 1944 + 648 = 2592
Step 5: 2592 + 648 = 3240
Step 6: 3240 + 648 = 3888
Step 7: 3888 + 648 = 4536
Step 8: 4536 + 648 = 5184
Step 9: 5184 + 648 = 5832
Step 10: 5832 + 648 = 6480
Step 11: 6480 + 648 = 7128
Step 12: 7128 + 648 = 7776
Step 13: 7776 + 648 = 8424
Step 14: 8424 + 648 = 9072
Step 15: 9072 + 648 = 9720
Step 16: 9720 + 648 = 10368
Step 17: 10368 + 648 = 11016
Step 18: 11016 + 648 = 11664
Step 19: 11664 + 648 = 12312
Step 20: 12312 + 648 = 12960
Step 21: 12960 + 648 = 13608
Step 22: 13608 + 648 = 14256
Step 23: 14256 + 648 = 14904
Step 24: 14904 + 648 = 15552
Step 25: 15552 + 648 = 16200
Step 26: 16200 + 648 = 16848
Step 27: 16848 + 648 = 17496
Step 28: 17496 + 648 = 18144
Step 29: 18144 + 648 = 18792
Step 30: 18792 + 648 = 19440
Step 31: 19440 + 648 = 20088
Step 32: 20088 + 648 = 20736
Step 33: 20736 + 648 = 21384
Step 34: 21384 + 648 = 22032
Step 35: 22032 + 648 = 22680
Step 36: 22680 + 648 = 23328
Step 37: 23328 + 648 = 23976
Step 38: 23976 + 648 = 24624
Step 39: 24624 + 648 = 25272
Step 40: 25272 + 648 = 25920
Step 41: 25920 + 648 = 26568
Step 42: 26568 + 648 = 27216
Step 43: 27216 + 648 = 27864
Step 44: 27864 + 648 = 28512
Step 45: 28512 + 648 = 29160
Step 46: 29160 + 648 = 29808
Step 47: 29808 + 648 = 30456
Step 48: 30456 + 648 = 31104
Step 49: 31104 + 648 = 31752
Step 50: 31752 + 648 = 32400
Step 51: 32400 + 648 = 33048
Step 52: 33048 + 648 = 33696
Step 53: 33696 + 648 = 34344
Step 54: 34344 + 648 = 34992
Step 55: 34992 + 648 = 35640
Step 56: 35640 + 648 = 36288
Step 57: 36288 + 648 = 36936
Step 58: 36936 + 648 = 37584
Step 59: 37584 + 648 = 38232
Step 60: 38232 + 648 = 38880
Step 61: 38880 + 648 = 39528
Step 62: 39528 + 648 = 40176
Step 63: 40176 + 648 = 40824
Step 64: 40824 + 648 = 41472
Step 65: 41472 + 648 = 42120
Step 66: 42120 + 648 = 42768
Step 67: 42768 + 648 = 43416
Step 68: 43416 + 648 = 44064
Step 69: 44064 + 648 = 44712
Step 70: 44712 + 648 = 45360
Step 71: 45360 + 648 = 46008
Step 72: 46008 + 648 = 46656
Step 73: 46656 + 648 = 47304
Step 74: 47304 + 648 = 47952
Step 75: 47952 + 648 = 48600
Step 76: 48600 + 648 = 49248
Step 77: 49248 + 648 = 49896
Step 78: 49896 + 648 = 50544
Step 79: 50544 + 648 = 51192
Step 80: 51192 + 648 = 51840
Step 81: 51840 + 648 = 52488
Step 82: 52488 + 648 = 53136
Step 83: 53136 + 648 = 53784
Step 84: 53784 + 648 = 54432
Step 85: 54432 + 648 = 55080
Step 86: 55080 + 648 = 55728
Step 87: 55728 + 648 = 56376
Step 88: 56376 + 648 = 57024
Step 89: 57024 + 648 = 57672
Step 90: 57672 + 648 = 58320
Step 91: 58320 + 648 = 58968
Step 92: 58968 + 648 = 59616
Step 93: 59616 + 648 = 60264
Step 94: 60264 + 648 = 60912
Step 95: 60912 + 648 = 61560
Step 96: 61560 + 648 = 62208
Step 97: 62208 + 648 = 62856
Step 98: 62856 + 648 = 63504
Step 99: 63504 + 648 = 64152
Step 100: 64152 + 648 = 64800
Step 101: 64800 + 648 = 65448
Step 102: 65448 + 648 = 66096
Step 103: 66096 + 648 = 66744
Step 104: 66744 + 648 = 67392
Step 105: 67392 + 648 = 68040
Step 106: 68040 + 648 = 68688
Step 107: 68688 + 648 = 69336
Step 108: 69336 + 648 = 69984
Step 109: 69984 + 648 = 70632
Step 110: 70632 + 648 = 71280
Step 111: 71280 + 648 = 71928
Step 112: 71928 + 648 = 72576
Step 113: 72576 + 648 = 73224
Step 114: 73224 + 648 = 73872
Step 115: 73872 + 648 = 74520
Step 116: 74520 + 648 = 75168
Step 117: 75168 + 648 = 75816
Step 118: 75816 + 648 = 76464
Step 119: 76464 + 648 = 77112
Step 120: 77112 + 648 = 77760
Step 121: 77760 + 648 = 78408
Step 122: 78408 + 648 = 79056
Step 123: 79056 + 648 = 79704
Step 124: 79704 + 648 = 80352
Step 125: 80352 + 648 = 81000
Step 126: 81000 + 648 = 81648
Step 127: 81648 + 648 = 82296
Step 128: 82296 + 648 = 82944
Step 129: 82944 + 648 = 83592
Step 130: 83592 + 648 = 84240
Step 131: 84240 + 648 = 84888
Step 132: 84888 + 648 = 85536
Step 133: 85536 + 648 = 86184
Step 134: 86184 + 648 = 86832
Step 135: 86832 + 648 = 87480
Step 136: 87480 + 648 = 88128
Step 137: 88128 + 648 = 88776
Step 138: 88776 + 648 = 89424
Step 139: 89424 + 648 = 90072
Step 140: 90072 + 648 = 90720
Step 141: 90720 + 648 = 91368
Step 142: 91368 + 648 = 92016
Step 143: 92016 + 648 = 92664
Step 144: 92664 + 648 = 93312
Step 145: 93312 + 648 = 93960
Step 146: 93960 + 648 = 94608
Step 147: 94608 + 648 = 95256
Step 148: 95256 + 648 = 95904
Step 149: 95904 + 648 = 96552
Step 150: 96552 + 648 = 97200
Step 151: 97200 + 648 = 97848
Step 152: 97848 + 648 = 98496
Step 153: 98496 + 648 = 99144
Step 154: 99144 + 648 = 99792
Step 155: 99792 + 648 = 100440
Step 156: 100440 + 648 = 101088
Step 157: 101088 + 648 = 101736
Step 158: 101736 + 648 = 102384
Step 159: 102384 + 648 = 103032
Step 160: 103032 + 648 = 103680
Step 161: 103680 + 648 = 104328
Step 162: 104328 + 648 = 104976
Step 163: 104976 + 648 = 105624
Step 164: 105624 + 648 = 106272
Step 165: 106272 + 648 = 106920
Step 166: 106920 + 648 = 107568
Step 167: 107568 + 648 = 108216
Step 168: 108216 + 648 = 108864
Step 169: 108864 + 648 = 109512
Step 170: 109512 + 648 = 110160
Step 171: 110160 + 648 = 110808
Step 172: 110808 + 648 = 111456
Step 173: 111456 + 648 = 112104
Step 174: 112104 + 648 = 112752
Step 175: 112752 + 648 = 113400
Step 176: 113400 + 648 = 114048
Step 177: 114048 + 648 = 114696
Step 178: 114696 + 648 = 115344
Step 179: 115344 + 648 = 115992
Step 180: 115992 + 648 = 116640
Step 181: 116640 + 648 = 117288
Step 182: 117288 + 648 = 117936
Step 183: 117936 + 648 = 118584
Step 184: 118584 + 648 = 119232
Step 185: 119232 + 648 = 119880
Step 186: 119880 + 648 = 120528
Step 187: 120528 + 648 = 121176
Step 188: 121176 + 648 = 121824
Step 189: 121824 + 648 = 122472
Step 190: 122472 + 648 = 123120
Step 191: 123120 + 648 = 123768
Step 192: 123768 + 648 = 124416
Step 193: 124416 + 648 = 125064
Step 194: 125064 + 648 = 125712
Step 195: 125712 + 648 = 126360
Step 196: 126360 + 648 = 127008
Step 197: 127008 + 648 = 127656
Step 198: 127656 + 648 = 128304
Step 199: 128304 + 648 = 128952
Step 200: 128952 + 648 = 129600
Step 201: 129600 + 648 = 130248
Step 202: 130248 + 648 = 130896
Step 203: 130896 + 648 = 131544
Step 204: 131544 + 648 = 132192
Step 205: 132192 + 648 = 132840
Step 206: 132840 + 648 = 133488
Step 207: 133488 + 648 = 134136
Step 208: 134136 + 648 = 134784
Step 209: 134784 + 648 = 135432
Step 210: 135432 + 648 = 136080
Step 211: 136080 + 648 = 136728
Step 212: 136728 + 648 = 137376
Step 213: 137376 + 648 = 138024
Step 214: 138024 + 648 = 138672
Step 215: 138672 + 648 = 139320
Step 216: 139320 + 648 = 139968
Step 217: 139968 + 648 = 140616
Step 218: 140616 + 648 = 141264
Step 219: 141264 + 648 = 141912
Step 220: 141912 + 648 = 142560
Step 221: 142560 + 648 = 143208
Step 222: 143208 + 648 = 143856
Step 223: 143856 + 648 = 144504
Step 224: 144504 + 648 = 145152
Step 225: 145152 + 648 = 145800
Step 226: 145800 + 648 = 146448
Step 227: 146448 + 648 = 147096
Step 228: 147096 + 648 = 147744
Step 229: 147744 + 648 = 148392
Step 230: 148392 + 648 = 149040
Step 231: 149040 + 648 = 149688
Step 232: 149688 + 648 = 150336
Step 233: 150336 + 648 = 150984
Step 234: 150984 + 648 = 151632
Step 235: 151632 + 648 = 152280
Step 236: 152280 + 648 = 152928
Step 237: 152928 + 648 = 153576
Step 238: 153576 + 648 = 154224
Step 239: 154224 + 648 = 154872
Step 240: 154872 + 648 = 155520
Step 241: 155520 + 648 = 156168
Step 242: 156168 + 648 = 156816

So, 648*242 = 156816