OK, let's work through this together. We're starting with 319 and we're going to multiply it by 12, which means we add 319 to itself 12 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

So, 319*12 = 3828