OK, let's work through this together. We're starting with 365 and we're going to multiply it by 12, which means we add 365 to itself 12 times.
Step 1: 0 + 365 = 365
Step 2: 365 + 365 = 730
Step 3: 730 + 365 = 1095
Step 4: 1095 + 365 = 1460
Step 5: 1460 + 365 = 1825
Step 6: 1825 + 365 = 2190
Step 7: 2190 + 365 = 2555
Step 8: 2555 + 365 = 2920
Step 9: 2920 + 365 = 3285
Step 10: 3285 + 365 = 3650
Step 11: 3650 + 365 = 4015
Step 12: 4015 + 365 = 4380

So, 365*12 = 4380