Let's roll up our sleeves and solve this. We have 353 and we're going to multiply it by 29, essentially adding 353 to itself 29 times.
Step 1: 0 + 353 = 353
Step 2: 353 + 353 = 706
Step 3: 706 + 353 = 1059
Step 4: 1059 + 353 = 1412
Step 5: 1412 + 353 = 1765
Step 6: 1765 + 353 = 2118
Step 7: 2118 + 353 = 2471
Step 8: 2471 + 353 = 2824
Step 9: 2824 + 353 = 3177
Step 10: 3177 + 353 = 3530
Step 11: 3530 + 353 = 3883
Step 12: 3883 + 353 = 4236
Step 13: 4236 + 353 = 4589
Step 14: 4589 + 353 = 4942
Step 15: 4942 + 353 = 5295
Step 16: 5295 + 353 = 5648
Step 17: 5648 + 353 = 6001
Step 18: 6001 + 353 = 6354
Step 19: 6354 + 353 = 6707
Step 20: 6707 + 353 = 7060
Step 21: 7060 + 353 = 7413
Step 22: 7413 + 353 = 7766
Step 23: 7766 + 353 = 8119
Step 24: 8119 + 353 = 8472
Step 25: 8472 + 353 = 8825
Step 26: 8825 + 353 = 9178
Step 27: 9178 + 353 = 9531
Step 28: 9531 + 353 = 9884
Step 29: 9884 + 353 = 10237

So, 353*29 = 10237