OK, let's work through this together. We're starting with 655 and we're going to multiply it by 72, which means we add 655 to itself 72 times.
Step 1: 0 + 655 = 655
Step 2: 655 + 655 = 1310
Step 3: 1310 + 655 = 1965
Step 4: 1965 + 655 = 2620
Step 5: 2620 + 655 = 3275
Step 6: 3275 + 655 = 3930
Step 7: 3930 + 655 = 4585
Step 8: 4585 + 655 = 5240
Step 9: 5240 + 655 = 5895
Step 10: 5895 + 655 = 6550
Step 11: 6550 + 655 = 7205
Step 12: 7205 + 655 = 7860
Step 13: 7860 + 655 = 8515
Step 14: 8515 + 655 = 9170
Step 15: 9170 + 655 = 9825
Step 16: 9825 + 655 = 10480
Step 17: 10480 + 655 = 11135
Step 18: 11135 + 655 = 11790
Step 19: 11790 + 655 = 12445
Step 20: 12445 + 655 = 13100
Step 21: 13100 + 655 = 13755
Step 22: 13755 + 655 = 14410
Step 23: 14410 + 655 = 15065
Step 24: 15065 + 655 = 15720
Step 25: 15720 + 655 = 16375
Step 26: 16375 + 655 = 17030
Step 27: 17030 + 655 = 17685
Step 28: 17685 + 655 = 18340
Step 29: 18340 + 655 = 18995
Step 30: 18995 + 655 = 19650
Step 31: 19650 + 655 = 20305
Step 32: 20305 + 655 = 20960
Step 33: 20960 + 655 = 21615
Step 34: 21615 + 655 = 22270
Step 35: 22270 + 655 = 22925
Step 36: 22925 + 655 = 23580
Step 37: 23580 + 655 = 24235
Step 38: 24235 + 655 = 24890
Step 39: 24890 + 655 = 25545
Step 40: 25545 + 655 = 26200
Step 41: 26200 + 655 = 26855
Step 42: 26855 + 655 = 27510
Step 43: 27510 + 655 = 28165
Step 44: 28165 + 655 = 28820
Step 45: 28820 + 655 = 29475
Step 46: 29475 + 655 = 30130
Step 47: 30130 + 655 = 30785
Step 48: 30785 + 655 = 31440
Step 49: 31440 + 655 = 32095
Step 50: 32095 + 655 = 32750
Step 51: 32750 + 655 = 33405
Step 52: 33405 + 655 = 34060
Step 53: 34060 + 655 = 34715
Step 54: 34715 + 655 = 35370
Step 55: 35370 + 655 = 36025
Step 56: 36025 + 655 = 36680
Step 57: 36680 + 655 = 37335
Step 58: 37335 + 655 = 37990
Step 59: 37990 + 655 = 38645
Step 60: 38645 + 655 = 39300
Step 61: 39300 + 655 = 39955
Step 62: 39955 + 655 = 40610
Step 63: 40610 + 655 = 41265
Step 64: 41265 + 655 = 41920
Step 65: 41920 + 655 = 42575
Step 66: 42575 + 655 = 43230
Step 67: 43230 + 655 = 43885
Step 68: 43885 + 655 = 44540
Step 69: 44540 + 655 = 45195
Step 70: 45195 + 655 = 45850
Step 71: 45850 + 655 = 46505
Step 72: 46505 + 655 = 47160

So, 655*72 = 47160