OK, let's work through this together. We're starting with 881 and we're going to multiply it by 14, which means we add 881 to itself 14 times.
Step 1: 0 + 881 = 881
Step 2: 881 + 881 = 1762
Step 3: 1762 + 881 = 2643
Step 4: 2643 + 881 = 3524
Step 5: 3524 + 881 = 4405
Step 6: 4405 + 881 = 5286
Step 7: 5286 + 881 = 6167
Step 8: 6167 + 881 = 7048
Step 9: 7048 + 881 = 7929
Step 10: 7929 + 881 = 8810
Step 11: 8810 + 881 = 9691
Step 12: 9691 + 881 = 10572
Step 13: 10572 + 881 = 11453
Step 14: 11453 + 881 = 12334

So, 881*14 = 12334