Let's get this math done. We have 389 and we're going to multiply it by 30. This is the same as taking 389 and adding it to itself 30 times.
Step 1: 0 + 389 = 389
Step 2: 389 + 389 = 778
Step 3: 778 + 389 = 1167
Step 4: 1167 + 389 = 1556
Step 5: 1556 + 389 = 1945
Step 6: 1945 + 389 = 2334
Step 7: 2334 + 389 = 2723
Step 8: 2723 + 389 = 3112
Step 9: 3112 + 389 = 3501
Step 10: 3501 + 389 = 3890
Step 11: 3890 + 389 = 4279
Step 12: 4279 + 389 = 4668
Step 13: 4668 + 389 = 5057
Step 14: 5057 + 389 = 5446
Step 15: 5446 + 389 = 5835
Step 16: 5835 + 389 = 6224
Step 17: 6224 + 389 = 6613
Step 18: 6613 + 389 = 7002
Step 19: 7002 + 389 = 7391
Step 20: 7391 + 389 = 7780
Step 21: 7780 + 389 = 8169
Step 22: 8169 + 389 = 8558
Step 23: 8558 + 389 = 8947
Step 24: 8947 + 389 = 9336
Step 25: 9336 + 389 = 9725
Step 26: 9725 + 389 = 10114
Step 27: 10114 + 389 = 10503
Step 28: 10503 + 389 = 10892
Step 29: 10892 + 389 = 11281
Step 30: 11281 + 389 = 11670

So, 389*30 = 11670