Let's roll up our sleeves and solve this. We have 319 and we're going to multiply it by 13, essentially adding 319 to itself 13 times.
Step 1: 0 + 319 = 319
Step 2: 319 + 319 = 638
Step 3: 638 + 319 = 957
Step 4: 957 + 319 = 1276
Step 5: 1276 + 319 = 1595
Step 6: 1595 + 319 = 1914
Step 7: 1914 + 319 = 2233
Step 8: 2233 + 319 = 2552
Step 9: 2552 + 319 = 2871
Step 10: 2871 + 319 = 3190
Step 11: 3190 + 319 = 3509
Step 12: 3509 + 319 = 3828
Step 13: 3828 + 319 = 4147

So, 319*13 = 4147