Let's get this math done. We have 579 and we're going to multiply it by 30. This is the same as taking 579 and adding it to itself 30 times.
Step 1: 0 + 579 = 579
Step 2: 579 + 579 = 1158
Step 3: 1158 + 579 = 1737
Step 4: 1737 + 579 = 2316
Step 5: 2316 + 579 = 2895
Step 6: 2895 + 579 = 3474
Step 7: 3474 + 579 = 4053
Step 8: 4053 + 579 = 4632
Step 9: 4632 + 579 = 5211
Step 10: 5211 + 579 = 5790
Step 11: 5790 + 579 = 6369
Step 12: 6369 + 579 = 6948
Step 13: 6948 + 579 = 7527
Step 14: 7527 + 579 = 8106
Step 15: 8106 + 579 = 8685
Step 16: 8685 + 579 = 9264
Step 17: 9264 + 579 = 9843
Step 18: 9843 + 579 = 10422
Step 19: 10422 + 579 = 11001
Step 20: 11001 + 579 = 11580
Step 21: 11580 + 579 = 12159
Step 22: 12159 + 579 = 12738
Step 23: 12738 + 579 = 13317
Step 24: 13317 + 579 = 13896
Step 25: 13896 + 579 = 14475
Step 26: 14475 + 579 = 15054
Step 27: 15054 + 579 = 15633
Step 28: 15633 + 579 = 16212
Step 29: 16212 + 579 = 16791
Step 30: 16791 + 579 = 17370

So, 579*30 = 17370