Sure thing, let's get straight to it. We start with 146 and we're going to multiply it by 20, which means adding 146 to itself 20 times.
Step 1: 0 + 146 = 146
Step 2: 146 + 146 = 292
Step 3: 292 + 146 = 438
Step 4: 438 + 146 = 584
Step 5: 584 + 146 = 730
Step 6: 730 + 146 = 876
Step 7: 876 + 146 = 1022
Step 8: 1022 + 146 = 1168
Step 9: 1168 + 146 = 1314
Step 10: 1314 + 146 = 1460
Step 11: 1460 + 146 = 1606
Step 12: 1606 + 146 = 1752
Step 13: 1752 + 146 = 1898
Step 14: 1898 + 146 = 2044
Step 15: 2044 + 146 = 2190
Step 16: 2190 + 146 = 2336
Step 17: 2336 + 146 = 2482
Step 18: 2482 + 146 = 2628
Step 19: 2628 + 146 = 2774
Step 20: 2774 + 146 = 2920

So, 146*20 = 2920