OK, let's crack this. We're given 214 and our task is to multiply it by 24. Essentially, we'll be adding 214 to itself 24 times.
Step 1: 0 + 214 = 214
Step 2: 214 + 214 = 428
Step 3: 428 + 214 = 642
Step 4: 642 + 214 = 856
Step 5: 856 + 214 = 1070
Step 6: 1070 + 214 = 1284
Step 7: 1284 + 214 = 1498
Step 8: 1498 + 214 = 1712
Step 9: 1712 + 214 = 1926
Step 10: 1926 + 214 = 2140
Step 11: 2140 + 214 = 2354
Step 12: 2354 + 214 = 2568
Step 13: 2568 + 214 = 2782
Step 14: 2782 + 214 = 2996
Step 15: 2996 + 214 = 3210
Step 16: 3210 + 214 = 3424
Step 17: 3424 + 214 = 3638
Step 18: 3638 + 214 = 3852
Step 19: 3852 + 214 = 4066
Step 20: 4066 + 214 = 4280
Step 21: 4280 + 214 = 4494
Step 22: 4494 + 214 = 4708
Step 23: 4708 + 214 = 4922
Step 24: 4922 + 214 = 5136

So, 214*24 = 5136