Let's roll up our sleeves and solve this. We have 237 and we're going to multiply it by 12, essentially adding 237 to itself 12 times.
Step 1: 0 + 237 = 237
Step 2: 237 + 237 = 474
Step 3: 474 + 237 = 711
Step 4: 711 + 237 = 948
Step 5: 948 + 237 = 1185
Step 6: 1185 + 237 = 1422
Step 7: 1422 + 237 = 1659
Step 8: 1659 + 237 = 1896
Step 9: 1896 + 237 = 2133
Step 10: 2133 + 237 = 2370
Step 11: 2370 + 237 = 2607
Step 12: 2607 + 237 = 2844

So, 237*12 = 2844