Let's get this math done. We have 351 and we're going to multiply it by 13. This is the same as taking 351 and adding it to itself 13 times.
Step 1: 0 + 351 = 351
Step 2: 351 + 351 = 702
Step 3: 702 + 351 = 1053
Step 4: 1053 + 351 = 1404
Step 5: 1404 + 351 = 1755
Step 6: 1755 + 351 = 2106
Step 7: 2106 + 351 = 2457
Step 8: 2457 + 351 = 2808
Step 9: 2808 + 351 = 3159
Step 10: 3159 + 351 = 3510
Step 11: 3510 + 351 = 3861
Step 12: 3861 + 351 = 4212
Step 13: 4212 + 351 = 4563

So, 351*13 = 4563