Let's roll up our sleeves and solve this. We have 616 and we're going to multiply it by 13, essentially adding 616 to itself 13 times.
Step 1: 0 + 616 = 616
Step 2: 616 + 616 = 1232
Step 3: 1232 + 616 = 1848
Step 4: 1848 + 616 = 2464
Step 5: 2464 + 616 = 3080
Step 6: 3080 + 616 = 3696
Step 7: 3696 + 616 = 4312
Step 8: 4312 + 616 = 4928
Step 9: 4928 + 616 = 5544
Step 10: 5544 + 616 = 6160
Step 11: 6160 + 616 = 6776
Step 12: 6776 + 616 = 7392
Step 13: 7392 + 616 = 8008

So, 616*13 = 8008