Let's roll up our sleeves and solve this. We have 765 and we're going to multiply it by 19, essentially adding 765 to itself 19 times.
Step 1: 0 + 765 = 765
Step 2: 765 + 765 = 1530
Step 3: 1530 + 765 = 2295
Step 4: 2295 + 765 = 3060
Step 5: 3060 + 765 = 3825
Step 6: 3825 + 765 = 4590
Step 7: 4590 + 765 = 5355
Step 8: 5355 + 765 = 6120
Step 9: 6120 + 765 = 6885
Step 10: 6885 + 765 = 7650
Step 11: 7650 + 765 = 8415
Step 12: 8415 + 765 = 9180
Step 13: 9180 + 765 = 9945
Step 14: 9945 + 765 = 10710
Step 15: 10710 + 765 = 11475
Step 16: 11475 + 765 = 12240
Step 17: 12240 + 765 = 13005
Step 18: 13005 + 765 = 13770
Step 19: 13770 + 765 = 14535

So, 765*19 = 14535