Alright, let's solve this math problem step by step. First, we have the number 354. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 84. So, we're going to take the number 354 and add it to itself 84 times.
Step 1: 0 + 354 = 354
Step 2: 354 + 354 = 708
Step 3: 708 + 354 = 1062
Step 4: 1062 + 354 = 1416
Step 5: 1416 + 354 = 1770
Step 6: 1770 + 354 = 2124
Step 7: 2124 + 354 = 2478
Step 8: 2478 + 354 = 2832
Step 9: 2832 + 354 = 3186
Step 10: 3186 + 354 = 3540
Step 11: 3540 + 354 = 3894
Step 12: 3894 + 354 = 4248
Step 13: 4248 + 354 = 4602
Step 14: 4602 + 354 = 4956
Step 15: 4956 + 354 = 5310
Step 16: 5310 + 354 = 5664
Step 17: 5664 + 354 = 6018
Step 18: 6018 + 354 = 6372
Step 19: 6372 + 354 = 6726
Step 20: 6726 + 354 = 7080
Step 21: 7080 + 354 = 7434
Step 22: 7434 + 354 = 7788
Step 23: 7788 + 354 = 8142
Step 24: 8142 + 354 = 8496
Step 25: 8496 + 354 = 8850
Step 26: 8850 + 354 = 9204
Step 27: 9204 + 354 = 9558
Step 28: 9558 + 354 = 9912
Step 29: 9912 + 354 = 10266
Step 30: 10266 + 354 = 10620
Step 31: 10620 + 354 = 10974
Step 32: 10974 + 354 = 11328
Step 33: 11328 + 354 = 11682
Step 34: 11682 + 354 = 12036
Step 35: 12036 + 354 = 12390
Step 36: 12390 + 354 = 12744
Step 37: 12744 + 354 = 13098
Step 38: 13098 + 354 = 13452
Step 39: 13452 + 354 = 13806
Step 40: 13806 + 354 = 14160
Step 41: 14160 + 354 = 14514
Step 42: 14514 + 354 = 14868
Step 43: 14868 + 354 = 15222
Step 44: 15222 + 354 = 15576
Step 45: 15576 + 354 = 15930
Step 46: 15930 + 354 = 16284
Step 47: 16284 + 354 = 16638
Step 48: 16638 + 354 = 16992
Step 49: 16992 + 354 = 17346
Step 50: 17346 + 354 = 17700
Step 51: 17700 + 354 = 18054
Step 52: 18054 + 354 = 18408
Step 53: 18408 + 354 = 18762
Step 54: 18762 + 354 = 19116
Step 55: 19116 + 354 = 19470
Step 56: 19470 + 354 = 19824
Step 57: 19824 + 354 = 20178
Step 58: 20178 + 354 = 20532
Step 59: 20532 + 354 = 20886
Step 60: 20886 + 354 = 21240
Step 61: 21240 + 354 = 21594
Step 62: 21594 + 354 = 21948
Step 63: 21948 + 354 = 22302
Step 64: 22302 + 354 = 22656
Step 65: 22656 + 354 = 23010
Step 66: 23010 + 354 = 23364
Step 67: 23364 + 354 = 23718
Step 68: 23718 + 354 = 24072
Step 69: 24072 + 354 = 24426
Step 70: 24426 + 354 = 24780
Step 71: 24780 + 354 = 25134
Step 72: 25134 + 354 = 25488
Step 73: 25488 + 354 = 25842
Step 74: 25842 + 354 = 26196
Step 75: 26196 + 354 = 26550
Step 76: 26550 + 354 = 26904
Step 77: 26904 + 354 = 27258
Step 78: 27258 + 354 = 27612
Step 79: 27612 + 354 = 27966
Step 80: 27966 + 354 = 28320
Step 81: 28320 + 354 = 28674
Step 82: 28674 + 354 = 29028
Step 83: 29028 + 354 = 29382
Step 84: 29382 + 354 = 29736

So, 354*84 = 29736