Let's roll up our sleeves and solve this. We have 585 and we're going to multiply it by 30, essentially adding 585 to itself 30 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
Step 21: 11700 + 585 = 12285
Step 22: 12285 + 585 = 12870
Step 23: 12870 + 585 = 13455
Step 24: 13455 + 585 = 14040
Step 25: 14040 + 585 = 14625
Step 26: 14625 + 585 = 15210
Step 27: 15210 + 585 = 15795
Step 28: 15795 + 585 = 16380
Step 29: 16380 + 585 = 16965
Step 30: 16965 + 585 = 17550

So, 585*30 = 17550