Let's roll up our sleeves and solve this. We have 212 and we're going to multiply it by 24, essentially adding 212 to itself 24 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
Step 13: 2544 + 212 = 2756
Step 14: 2756 + 212 = 2968
Step 15: 2968 + 212 = 3180
Step 16: 3180 + 212 = 3392
Step 17: 3392 + 212 = 3604
Step 18: 3604 + 212 = 3816
Step 19: 3816 + 212 = 4028
Step 20: 4028 + 212 = 4240
Step 21: 4240 + 212 = 4452
Step 22: 4452 + 212 = 4664
Step 23: 4664 + 212 = 4876
Step 24: 4876 + 212 = 5088

So, 212*24 = 5088