Sure thing! We've got 451 and we're gonna multiply it by 56. That's the same as adding 451 to itself 56 times.
Step 1: 0 + 451 = 451
Step 2: 451 + 451 = 902
Step 3: 902 + 451 = 1353
Step 4: 1353 + 451 = 1804
Step 5: 1804 + 451 = 2255
Step 6: 2255 + 451 = 2706
Step 7: 2706 + 451 = 3157
Step 8: 3157 + 451 = 3608
Step 9: 3608 + 451 = 4059
Step 10: 4059 + 451 = 4510
Step 11: 4510 + 451 = 4961
Step 12: 4961 + 451 = 5412
Step 13: 5412 + 451 = 5863
Step 14: 5863 + 451 = 6314
Step 15: 6314 + 451 = 6765
Step 16: 6765 + 451 = 7216
Step 17: 7216 + 451 = 7667
Step 18: 7667 + 451 = 8118
Step 19: 8118 + 451 = 8569
Step 20: 8569 + 451 = 9020
Step 21: 9020 + 451 = 9471
Step 22: 9471 + 451 = 9922
Step 23: 9922 + 451 = 10373
Step 24: 10373 + 451 = 10824
Step 25: 10824 + 451 = 11275
Step 26: 11275 + 451 = 11726
Step 27: 11726 + 451 = 12177
Step 28: 12177 + 451 = 12628
Step 29: 12628 + 451 = 13079
Step 30: 13079 + 451 = 13530
Step 31: 13530 + 451 = 13981
Step 32: 13981 + 451 = 14432
Step 33: 14432 + 451 = 14883
Step 34: 14883 + 451 = 15334
Step 35: 15334 + 451 = 15785
Step 36: 15785 + 451 = 16236
Step 37: 16236 + 451 = 16687
Step 38: 16687 + 451 = 17138
Step 39: 17138 + 451 = 17589
Step 40: 17589 + 451 = 18040
Step 41: 18040 + 451 = 18491
Step 42: 18491 + 451 = 18942
Step 43: 18942 + 451 = 19393
Step 44: 19393 + 451 = 19844
Step 45: 19844 + 451 = 20295
Step 46: 20295 + 451 = 20746
Step 47: 20746 + 451 = 21197
Step 48: 21197 + 451 = 21648
Step 49: 21648 + 451 = 22099
Step 50: 22099 + 451 = 22550
Step 51: 22550 + 451 = 23001
Step 52: 23001 + 451 = 23452
Step 53: 23452 + 451 = 23903
Step 54: 23903 + 451 = 24354
Step 55: 24354 + 451 = 24805
Step 56: 24805 + 451 = 25256

So, 451*56 = 25256