Without delay, let's solve this. We've got 212 and we will be multiplying it by 12, that is, adding 212 to itself 12 times.
Step 1: 0 + 212 = 212
Step 2: 212 + 212 = 424
Step 3: 424 + 212 = 636
Step 4: 636 + 212 = 848
Step 5: 848 + 212 = 1060
Step 6: 1060 + 212 = 1272
Step 7: 1272 + 212 = 1484
Step 8: 1484 + 212 = 1696
Step 9: 1696 + 212 = 1908
Step 10: 1908 + 212 = 2120
Step 11: 2120 + 212 = 2332
Step 12: 2332 + 212 = 2544

So, 212*12 = 2544