Let's get this math done. We have 575 and we're going to multiply it by 20. This is the same as taking 575 and adding it to itself 20 times.
Step 1: 0 + 575 = 575
Step 2: 575 + 575 = 1150
Step 3: 1150 + 575 = 1725
Step 4: 1725 + 575 = 2300
Step 5: 2300 + 575 = 2875
Step 6: 2875 + 575 = 3450
Step 7: 3450 + 575 = 4025
Step 8: 4025 + 575 = 4600
Step 9: 4600 + 575 = 5175
Step 10: 5175 + 575 = 5750
Step 11: 5750 + 575 = 6325
Step 12: 6325 + 575 = 6900
Step 13: 6900 + 575 = 7475
Step 14: 7475 + 575 = 8050
Step 15: 8050 + 575 = 8625
Step 16: 8625 + 575 = 9200
Step 17: 9200 + 575 = 9775
Step 18: 9775 + 575 = 10350
Step 19: 10350 + 575 = 10925
Step 20: 10925 + 575 = 11500

So, 575*20 = 11500