Without delay, let's solve this. We've got 457 and we will be multiplying it by 49, that is, adding 457 to itself 49 times.
Step 1: 0 + 457 = 457
Step 2: 457 + 457 = 914
Step 3: 914 + 457 = 1371
Step 4: 1371 + 457 = 1828
Step 5: 1828 + 457 = 2285
Step 6: 2285 + 457 = 2742
Step 7: 2742 + 457 = 3199
Step 8: 3199 + 457 = 3656
Step 9: 3656 + 457 = 4113
Step 10: 4113 + 457 = 4570
Step 11: 4570 + 457 = 5027
Step 12: 5027 + 457 = 5484
Step 13: 5484 + 457 = 5941
Step 14: 5941 + 457 = 6398
Step 15: 6398 + 457 = 6855
Step 16: 6855 + 457 = 7312
Step 17: 7312 + 457 = 7769
Step 18: 7769 + 457 = 8226
Step 19: 8226 + 457 = 8683
Step 20: 8683 + 457 = 9140
Step 21: 9140 + 457 = 9597
Step 22: 9597 + 457 = 10054
Step 23: 10054 + 457 = 10511
Step 24: 10511 + 457 = 10968
Step 25: 10968 + 457 = 11425
Step 26: 11425 + 457 = 11882
Step 27: 11882 + 457 = 12339
Step 28: 12339 + 457 = 12796
Step 29: 12796 + 457 = 13253
Step 30: 13253 + 457 = 13710
Step 31: 13710 + 457 = 14167
Step 32: 14167 + 457 = 14624
Step 33: 14624 + 457 = 15081
Step 34: 15081 + 457 = 15538
Step 35: 15538 + 457 = 15995
Step 36: 15995 + 457 = 16452
Step 37: 16452 + 457 = 16909
Step 38: 16909 + 457 = 17366
Step 39: 17366 + 457 = 17823
Step 40: 17823 + 457 = 18280
Step 41: 18280 + 457 = 18737
Step 42: 18737 + 457 = 19194
Step 43: 19194 + 457 = 19651
Step 44: 19651 + 457 = 20108
Step 45: 20108 + 457 = 20565
Step 46: 20565 + 457 = 21022
Step 47: 21022 + 457 = 21479
Step 48: 21479 + 457 = 21936
Step 49: 21936 + 457 = 22393

So, 457*49 = 22393