Let's roll up our sleeves and solve this. We have 337 and we're going to multiply it by 47, essentially adding 337 to itself 47 times.
Step 1: 0 + 337 = 337
Step 2: 337 + 337 = 674
Step 3: 674 + 337 = 1011
Step 4: 1011 + 337 = 1348
Step 5: 1348 + 337 = 1685
Step 6: 1685 + 337 = 2022
Step 7: 2022 + 337 = 2359
Step 8: 2359 + 337 = 2696
Step 9: 2696 + 337 = 3033
Step 10: 3033 + 337 = 3370
Step 11: 3370 + 337 = 3707
Step 12: 3707 + 337 = 4044
Step 13: 4044 + 337 = 4381
Step 14: 4381 + 337 = 4718
Step 15: 4718 + 337 = 5055
Step 16: 5055 + 337 = 5392
Step 17: 5392 + 337 = 5729
Step 18: 5729 + 337 = 6066
Step 19: 6066 + 337 = 6403
Step 20: 6403 + 337 = 6740
Step 21: 6740 + 337 = 7077
Step 22: 7077 + 337 = 7414
Step 23: 7414 + 337 = 7751
Step 24: 7751 + 337 = 8088
Step 25: 8088 + 337 = 8425
Step 26: 8425 + 337 = 8762
Step 27: 8762 + 337 = 9099
Step 28: 9099 + 337 = 9436
Step 29: 9436 + 337 = 9773
Step 30: 9773 + 337 = 10110
Step 31: 10110 + 337 = 10447
Step 32: 10447 + 337 = 10784
Step 33: 10784 + 337 = 11121
Step 34: 11121 + 337 = 11458
Step 35: 11458 + 337 = 11795
Step 36: 11795 + 337 = 12132
Step 37: 12132 + 337 = 12469
Step 38: 12469 + 337 = 12806
Step 39: 12806 + 337 = 13143
Step 40: 13143 + 337 = 13480
Step 41: 13480 + 337 = 13817
Step 42: 13817 + 337 = 14154
Step 43: 14154 + 337 = 14491
Step 44: 14491 + 337 = 14828
Step 45: 14828 + 337 = 15165
Step 46: 15165 + 337 = 15502
Step 47: 15502 + 337 = 15839

So, 337*47 = 15839