OK, let's work through this together. We're starting with 101 and we're going to multiply it by 30, which means we add 101 to itself 30 times.
Step 1: 0 + 101 = 101
Step 2: 101 + 101 = 202
Step 3: 202 + 101 = 303
Step 4: 303 + 101 = 404
Step 5: 404 + 101 = 505
Step 6: 505 + 101 = 606
Step 7: 606 + 101 = 707
Step 8: 707 + 101 = 808
Step 9: 808 + 101 = 909
Step 10: 909 + 101 = 1010
Step 11: 1010 + 101 = 1111
Step 12: 1111 + 101 = 1212
Step 13: 1212 + 101 = 1313
Step 14: 1313 + 101 = 1414
Step 15: 1414 + 101 = 1515
Step 16: 1515 + 101 = 1616
Step 17: 1616 + 101 = 1717
Step 18: 1717 + 101 = 1818
Step 19: 1818 + 101 = 1919
Step 20: 1919 + 101 = 2020
Step 21: 2020 + 101 = 2121
Step 22: 2121 + 101 = 2222
Step 23: 2222 + 101 = 2323
Step 24: 2323 + 101 = 2424
Step 25: 2424 + 101 = 2525
Step 26: 2525 + 101 = 2626
Step 27: 2626 + 101 = 2727
Step 28: 2727 + 101 = 2828
Step 29: 2828 + 101 = 2929
Step 30: 2929 + 101 = 3030

So, 101*30 = 3030