Let's roll up our sleeves and solve this. We have 868 and we're going to multiply it by 72, essentially adding 868 to itself 72 times.
Step 1: 0 + 868 = 868
Step 2: 868 + 868 = 1736
Step 3: 1736 + 868 = 2604
Step 4: 2604 + 868 = 3472
Step 5: 3472 + 868 = 4340
Step 6: 4340 + 868 = 5208
Step 7: 5208 + 868 = 6076
Step 8: 6076 + 868 = 6944
Step 9: 6944 + 868 = 7812
Step 10: 7812 + 868 = 8680
Step 11: 8680 + 868 = 9548
Step 12: 9548 + 868 = 10416
Step 13: 10416 + 868 = 11284
Step 14: 11284 + 868 = 12152
Step 15: 12152 + 868 = 13020
Step 16: 13020 + 868 = 13888
Step 17: 13888 + 868 = 14756
Step 18: 14756 + 868 = 15624
Step 19: 15624 + 868 = 16492
Step 20: 16492 + 868 = 17360
Step 21: 17360 + 868 = 18228
Step 22: 18228 + 868 = 19096
Step 23: 19096 + 868 = 19964
Step 24: 19964 + 868 = 20832
Step 25: 20832 + 868 = 21700
Step 26: 21700 + 868 = 22568
Step 27: 22568 + 868 = 23436
Step 28: 23436 + 868 = 24304
Step 29: 24304 + 868 = 25172
Step 30: 25172 + 868 = 26040
Step 31: 26040 + 868 = 26908
Step 32: 26908 + 868 = 27776
Step 33: 27776 + 868 = 28644
Step 34: 28644 + 868 = 29512
Step 35: 29512 + 868 = 30380
Step 36: 30380 + 868 = 31248
Step 37: 31248 + 868 = 32116
Step 38: 32116 + 868 = 32984
Step 39: 32984 + 868 = 33852
Step 40: 33852 + 868 = 34720
Step 41: 34720 + 868 = 35588
Step 42: 35588 + 868 = 36456
Step 43: 36456 + 868 = 37324
Step 44: 37324 + 868 = 38192
Step 45: 38192 + 868 = 39060
Step 46: 39060 + 868 = 39928
Step 47: 39928 + 868 = 40796
Step 48: 40796 + 868 = 41664
Step 49: 41664 + 868 = 42532
Step 50: 42532 + 868 = 43400
Step 51: 43400 + 868 = 44268
Step 52: 44268 + 868 = 45136
Step 53: 45136 + 868 = 46004
Step 54: 46004 + 868 = 46872
Step 55: 46872 + 868 = 47740
Step 56: 47740 + 868 = 48608
Step 57: 48608 + 868 = 49476
Step 58: 49476 + 868 = 50344
Step 59: 50344 + 868 = 51212
Step 60: 51212 + 868 = 52080
Step 61: 52080 + 868 = 52948
Step 62: 52948 + 868 = 53816
Step 63: 53816 + 868 = 54684
Step 64: 54684 + 868 = 55552
Step 65: 55552 + 868 = 56420
Step 66: 56420 + 868 = 57288
Step 67: 57288 + 868 = 58156
Step 68: 58156 + 868 = 59024
Step 69: 59024 + 868 = 59892
Step 70: 59892 + 868 = 60760
Step 71: 60760 + 868 = 61628
Step 72: 61628 + 868 = 62496

So, 868*72 = 62496