Let's roll up our sleeves and solve this. We have 352 and we're going to multiply it by 39, essentially adding 352 to itself 39 times.
Step 1: 0 + 352 = 352
Step 2: 352 + 352 = 704
Step 3: 704 + 352 = 1056
Step 4: 1056 + 352 = 1408
Step 5: 1408 + 352 = 1760
Step 6: 1760 + 352 = 2112
Step 7: 2112 + 352 = 2464
Step 8: 2464 + 352 = 2816
Step 9: 2816 + 352 = 3168
Step 10: 3168 + 352 = 3520
Step 11: 3520 + 352 = 3872
Step 12: 3872 + 352 = 4224
Step 13: 4224 + 352 = 4576
Step 14: 4576 + 352 = 4928
Step 15: 4928 + 352 = 5280
Step 16: 5280 + 352 = 5632
Step 17: 5632 + 352 = 5984
Step 18: 5984 + 352 = 6336
Step 19: 6336 + 352 = 6688
Step 20: 6688 + 352 = 7040
Step 21: 7040 + 352 = 7392
Step 22: 7392 + 352 = 7744
Step 23: 7744 + 352 = 8096
Step 24: 8096 + 352 = 8448
Step 25: 8448 + 352 = 8800
Step 26: 8800 + 352 = 9152
Step 27: 9152 + 352 = 9504
Step 28: 9504 + 352 = 9856
Step 29: 9856 + 352 = 10208
Step 30: 10208 + 352 = 10560
Step 31: 10560 + 352 = 10912
Step 32: 10912 + 352 = 11264
Step 33: 11264 + 352 = 11616
Step 34: 11616 + 352 = 11968
Step 35: 11968 + 352 = 12320
Step 36: 12320 + 352 = 12672
Step 37: 12672 + 352 = 13024
Step 38: 13024 + 352 = 13376
Step 39: 13376 + 352 = 13728

So, 352*39 = 13728