Alright, let's solve this math problem step by step. First, we have the number 585. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 20. So, we're going to take the number 585 and add it to itself 20 times.
Step 1: 0 + 585 = 585
Step 2: 585 + 585 = 1170
Step 3: 1170 + 585 = 1755
Step 4: 1755 + 585 = 2340
Step 5: 2340 + 585 = 2925
Step 6: 2925 + 585 = 3510
Step 7: 3510 + 585 = 4095
Step 8: 4095 + 585 = 4680
Step 9: 4680 + 585 = 5265
Step 10: 5265 + 585 = 5850
Step 11: 5850 + 585 = 6435
Step 12: 6435 + 585 = 7020
Step 13: 7020 + 585 = 7605
Step 14: 7605 + 585 = 8190
Step 15: 8190 + 585 = 8775
Step 16: 8775 + 585 = 9360
Step 17: 9360 + 585 = 9945
Step 18: 9945 + 585 = 10530
Step 19: 10530 + 585 = 11115
Step 20: 11115 + 585 = 11700

So, 585*20 = 11700