OK, let's crack this. We're given 525 and our task is to multiply it by 19. Essentially, we'll be adding 525 to itself 19 times.
Step 1: 0 + 525 = 525
Step 2: 525 + 525 = 1050
Step 3: 1050 + 525 = 1575
Step 4: 1575 + 525 = 2100
Step 5: 2100 + 525 = 2625
Step 6: 2625 + 525 = 3150
Step 7: 3150 + 525 = 3675
Step 8: 3675 + 525 = 4200
Step 9: 4200 + 525 = 4725
Step 10: 4725 + 525 = 5250
Step 11: 5250 + 525 = 5775
Step 12: 5775 + 525 = 6300
Step 13: 6300 + 525 = 6825
Step 14: 6825 + 525 = 7350
Step 15: 7350 + 525 = 7875
Step 16: 7875 + 525 = 8400
Step 17: 8400 + 525 = 8925
Step 18: 8925 + 525 = 9450
Step 19: 9450 + 525 = 9975

So, 525*19 = 9975