Sure thing, let's get straight to it. We start with 72 and we're going to multiply it by 107, which means adding 72 to itself 107 times.
Step 1: 0 + 72 = 72
Step 2: 72 + 72 = 144
Step 3: 144 + 72 = 216
Step 4: 216 + 72 = 288
Step 5: 288 + 72 = 360
Step 6: 360 + 72 = 432
Step 7: 432 + 72 = 504
Step 8: 504 + 72 = 576
Step 9: 576 + 72 = 648
Step 10: 648 + 72 = 720
Step 11: 720 + 72 = 792
Step 12: 792 + 72 = 864
Step 13: 864 + 72 = 936
Step 14: 936 + 72 = 1008
Step 15: 1008 + 72 = 1080
Step 16: 1080 + 72 = 1152
Step 17: 1152 + 72 = 1224
Step 18: 1224 + 72 = 1296
Step 19: 1296 + 72 = 1368
Step 20: 1368 + 72 = 1440
Step 21: 1440 + 72 = 1512
Step 22: 1512 + 72 = 1584
Step 23: 1584 + 72 = 1656
Step 24: 1656 + 72 = 1728
Step 25: 1728 + 72 = 1800
Step 26: 1800 + 72 = 1872
Step 27: 1872 + 72 = 1944
Step 28: 1944 + 72 = 2016
Step 29: 2016 + 72 = 2088
Step 30: 2088 + 72 = 2160
Step 31: 2160 + 72 = 2232
Step 32: 2232 + 72 = 2304
Step 33: 2304 + 72 = 2376
Step 34: 2376 + 72 = 2448
Step 35: 2448 + 72 = 2520
Step 36: 2520 + 72 = 2592
Step 37: 2592 + 72 = 2664
Step 38: 2664 + 72 = 2736
Step 39: 2736 + 72 = 2808
Step 40: 2808 + 72 = 2880
Step 41: 2880 + 72 = 2952
Step 42: 2952 + 72 = 3024
Step 43: 3024 + 72 = 3096
Step 44: 3096 + 72 = 3168
Step 45: 3168 + 72 = 3240
Step 46: 3240 + 72 = 3312
Step 47: 3312 + 72 = 3384
Step 48: 3384 + 72 = 3456
Step 49: 3456 + 72 = 3528
Step 50: 3528 + 72 = 3600
Step 51: 3600 + 72 = 3672
Step 52: 3672 + 72 = 3744
Step 53: 3744 + 72 = 3816
Step 54: 3816 + 72 = 3888
Step 55: 3888 + 72 = 3960
Step 56: 3960 + 72 = 4032
Step 57: 4032 + 72 = 4104
Step 58: 4104 + 72 = 4176
Step 59: 4176 + 72 = 4248
Step 60: 4248 + 72 = 4320
Step 61: 4320 + 72 = 4392
Step 62: 4392 + 72 = 4464
Step 63: 4464 + 72 = 4536
Step 64: 4536 + 72 = 4608
Step 65: 4608 + 72 = 4680
Step 66: 4680 + 72 = 4752
Step 67: 4752 + 72 = 4824
Step 68: 4824 + 72 = 4896
Step 69: 4896 + 72 = 4968
Step 70: 4968 + 72 = 5040
Step 71: 5040 + 72 = 5112
Step 72: 5112 + 72 = 5184
Step 73: 5184 + 72 = 5256
Step 74: 5256 + 72 = 5328
Step 75: 5328 + 72 = 5400
Step 76: 5400 + 72 = 5472
Step 77: 5472 + 72 = 5544
Step 78: 5544 + 72 = 5616
Step 79: 5616 + 72 = 5688
Step 80: 5688 + 72 = 5760
Step 81: 5760 + 72 = 5832
Step 82: 5832 + 72 = 5904
Step 83: 5904 + 72 = 5976
Step 84: 5976 + 72 = 6048
Step 85: 6048 + 72 = 6120
Step 86: 6120 + 72 = 6192
Step 87: 6192 + 72 = 6264
Step 88: 6264 + 72 = 6336
Step 89: 6336 + 72 = 6408
Step 90: 6408 + 72 = 6480
Step 91: 6480 + 72 = 6552
Step 92: 6552 + 72 = 6624
Step 93: 6624 + 72 = 6696
Step 94: 6696 + 72 = 6768
Step 95: 6768 + 72 = 6840
Step 96: 6840 + 72 = 6912
Step 97: 6912 + 72 = 6984
Step 98: 6984 + 72 = 7056
Step 99: 7056 + 72 = 7128
Step 100: 7128 + 72 = 7200
Step 101: 7200 + 72 = 7272
Step 102: 7272 + 72 = 7344
Step 103: 7344 + 72 = 7416
Step 104: 7416 + 72 = 7488
Step 105: 7488 + 72 = 7560
Step 106: 7560 + 72 = 7632
Step 107: 7632 + 72 = 7704

So, 72*107 = 7704