Let's roll up our sleeves and solve this. We have 403 and we're going to multiply it by 65, essentially adding 403 to itself 65 times.
Step 1: 0 + 403 = 403
Step 2: 403 + 403 = 806
Step 3: 806 + 403 = 1209
Step 4: 1209 + 403 = 1612
Step 5: 1612 + 403 = 2015
Step 6: 2015 + 403 = 2418
Step 7: 2418 + 403 = 2821
Step 8: 2821 + 403 = 3224
Step 9: 3224 + 403 = 3627
Step 10: 3627 + 403 = 4030
Step 11: 4030 + 403 = 4433
Step 12: 4433 + 403 = 4836
Step 13: 4836 + 403 = 5239
Step 14: 5239 + 403 = 5642
Step 15: 5642 + 403 = 6045
Step 16: 6045 + 403 = 6448
Step 17: 6448 + 403 = 6851
Step 18: 6851 + 403 = 7254
Step 19: 7254 + 403 = 7657
Step 20: 7657 + 403 = 8060
Step 21: 8060 + 403 = 8463
Step 22: 8463 + 403 = 8866
Step 23: 8866 + 403 = 9269
Step 24: 9269 + 403 = 9672
Step 25: 9672 + 403 = 10075
Step 26: 10075 + 403 = 10478
Step 27: 10478 + 403 = 10881
Step 28: 10881 + 403 = 11284
Step 29: 11284 + 403 = 11687
Step 30: 11687 + 403 = 12090
Step 31: 12090 + 403 = 12493
Step 32: 12493 + 403 = 12896
Step 33: 12896 + 403 = 13299
Step 34: 13299 + 403 = 13702
Step 35: 13702 + 403 = 14105
Step 36: 14105 + 403 = 14508
Step 37: 14508 + 403 = 14911
Step 38: 14911 + 403 = 15314
Step 39: 15314 + 403 = 15717
Step 40: 15717 + 403 = 16120
Step 41: 16120 + 403 = 16523
Step 42: 16523 + 403 = 16926
Step 43: 16926 + 403 = 17329
Step 44: 17329 + 403 = 17732
Step 45: 17732 + 403 = 18135
Step 46: 18135 + 403 = 18538
Step 47: 18538 + 403 = 18941
Step 48: 18941 + 403 = 19344
Step 49: 19344 + 403 = 19747
Step 50: 19747 + 403 = 20150
Step 51: 20150 + 403 = 20553
Step 52: 20553 + 403 = 20956
Step 53: 20956 + 403 = 21359
Step 54: 21359 + 403 = 21762
Step 55: 21762 + 403 = 22165
Step 56: 22165 + 403 = 22568
Step 57: 22568 + 403 = 22971
Step 58: 22971 + 403 = 23374
Step 59: 23374 + 403 = 23777
Step 60: 23777 + 403 = 24180
Step 61: 24180 + 403 = 24583
Step 62: 24583 + 403 = 24986
Step 63: 24986 + 403 = 25389
Step 64: 25389 + 403 = 25792
Step 65: 25792 + 403 = 26195

So, 403*65 = 26195