OK, let's work through this together. We're starting with 268 and we're going to multiply it by 84, which means we add 268 to itself 84 times.
Step 1: 0 + 268 = 268
Step 2: 268 + 268 = 536
Step 3: 536 + 268 = 804
Step 4: 804 + 268 = 1072
Step 5: 1072 + 268 = 1340
Step 6: 1340 + 268 = 1608
Step 7: 1608 + 268 = 1876
Step 8: 1876 + 268 = 2144
Step 9: 2144 + 268 = 2412
Step 10: 2412 + 268 = 2680
Step 11: 2680 + 268 = 2948
Step 12: 2948 + 268 = 3216
Step 13: 3216 + 268 = 3484
Step 14: 3484 + 268 = 3752
Step 15: 3752 + 268 = 4020
Step 16: 4020 + 268 = 4288
Step 17: 4288 + 268 = 4556
Step 18: 4556 + 268 = 4824
Step 19: 4824 + 268 = 5092
Step 20: 5092 + 268 = 5360
Step 21: 5360 + 268 = 5628
Step 22: 5628 + 268 = 5896
Step 23: 5896 + 268 = 6164
Step 24: 6164 + 268 = 6432
Step 25: 6432 + 268 = 6700
Step 26: 6700 + 268 = 6968
Step 27: 6968 + 268 = 7236
Step 28: 7236 + 268 = 7504
Step 29: 7504 + 268 = 7772
Step 30: 7772 + 268 = 8040
Step 31: 8040 + 268 = 8308
Step 32: 8308 + 268 = 8576
Step 33: 8576 + 268 = 8844
Step 34: 8844 + 268 = 9112
Step 35: 9112 + 268 = 9380
Step 36: 9380 + 268 = 9648
Step 37: 9648 + 268 = 9916
Step 38: 9916 + 268 = 10184
Step 39: 10184 + 268 = 10452
Step 40: 10452 + 268 = 10720
Step 41: 10720 + 268 = 10988
Step 42: 10988 + 268 = 11256
Step 43: 11256 + 268 = 11524
Step 44: 11524 + 268 = 11792
Step 45: 11792 + 268 = 12060
Step 46: 12060 + 268 = 12328
Step 47: 12328 + 268 = 12596
Step 48: 12596 + 268 = 12864
Step 49: 12864 + 268 = 13132
Step 50: 13132 + 268 = 13400
Step 51: 13400 + 268 = 13668
Step 52: 13668 + 268 = 13936
Step 53: 13936 + 268 = 14204
Step 54: 14204 + 268 = 14472
Step 55: 14472 + 268 = 14740
Step 56: 14740 + 268 = 15008
Step 57: 15008 + 268 = 15276
Step 58: 15276 + 268 = 15544
Step 59: 15544 + 268 = 15812
Step 60: 15812 + 268 = 16080
Step 61: 16080 + 268 = 16348
Step 62: 16348 + 268 = 16616
Step 63: 16616 + 268 = 16884
Step 64: 16884 + 268 = 17152
Step 65: 17152 + 268 = 17420
Step 66: 17420 + 268 = 17688
Step 67: 17688 + 268 = 17956
Step 68: 17956 + 268 = 18224
Step 69: 18224 + 268 = 18492
Step 70: 18492 + 268 = 18760
Step 71: 18760 + 268 = 19028
Step 72: 19028 + 268 = 19296
Step 73: 19296 + 268 = 19564
Step 74: 19564 + 268 = 19832
Step 75: 19832 + 268 = 20100
Step 76: 20100 + 268 = 20368
Step 77: 20368 + 268 = 20636
Step 78: 20636 + 268 = 20904
Step 79: 20904 + 268 = 21172
Step 80: 21172 + 268 = 21440
Step 81: 21440 + 268 = 21708
Step 82: 21708 + 268 = 21976
Step 83: 21976 + 268 = 22244
Step 84: 22244 + 268 = 22512

So, 268*84 = 22512