OK, let's crack this. We're given 757 and our task is to multiply it by 49. Essentially, we'll be adding 757 to itself 49 times.
Step 1: 0 + 757 = 757
Step 2: 757 + 757 = 1514
Step 3: 1514 + 757 = 2271
Step 4: 2271 + 757 = 3028
Step 5: 3028 + 757 = 3785
Step 6: 3785 + 757 = 4542
Step 7: 4542 + 757 = 5299
Step 8: 5299 + 757 = 6056
Step 9: 6056 + 757 = 6813
Step 10: 6813 + 757 = 7570
Step 11: 7570 + 757 = 8327
Step 12: 8327 + 757 = 9084
Step 13: 9084 + 757 = 9841
Step 14: 9841 + 757 = 10598
Step 15: 10598 + 757 = 11355
Step 16: 11355 + 757 = 12112
Step 17: 12112 + 757 = 12869
Step 18: 12869 + 757 = 13626
Step 19: 13626 + 757 = 14383
Step 20: 14383 + 757 = 15140
Step 21: 15140 + 757 = 15897
Step 22: 15897 + 757 = 16654
Step 23: 16654 + 757 = 17411
Step 24: 17411 + 757 = 18168
Step 25: 18168 + 757 = 18925
Step 26: 18925 + 757 = 19682
Step 27: 19682 + 757 = 20439
Step 28: 20439 + 757 = 21196
Step 29: 21196 + 757 = 21953
Step 30: 21953 + 757 = 22710
Step 31: 22710 + 757 = 23467
Step 32: 23467 + 757 = 24224
Step 33: 24224 + 757 = 24981
Step 34: 24981 + 757 = 25738
Step 35: 25738 + 757 = 26495
Step 36: 26495 + 757 = 27252
Step 37: 27252 + 757 = 28009
Step 38: 28009 + 757 = 28766
Step 39: 28766 + 757 = 29523
Step 40: 29523 + 757 = 30280
Step 41: 30280 + 757 = 31037
Step 42: 31037 + 757 = 31794
Step 43: 31794 + 757 = 32551
Step 44: 32551 + 757 = 33308
Step 45: 33308 + 757 = 34065
Step 46: 34065 + 757 = 34822
Step 47: 34822 + 757 = 35579
Step 48: 35579 + 757 = 36336
Step 49: 36336 + 757 = 37093

So, 757*49 = 37093