OK, let's work through this together. We're starting with 374 and we're going to multiply it by 12, which means we add 374 to itself 12 times.
Step 1: 0 + 374 = 374
Step 2: 374 + 374 = 748
Step 3: 748 + 374 = 1122
Step 4: 1122 + 374 = 1496
Step 5: 1496 + 374 = 1870
Step 6: 1870 + 374 = 2244
Step 7: 2244 + 374 = 2618
Step 8: 2618 + 374 = 2992
Step 9: 2992 + 374 = 3366
Step 10: 3366 + 374 = 3740
Step 11: 3740 + 374 = 4114
Step 12: 4114 + 374 = 4488

So, 374*12 = 4488