Without delay, let's solve this. We've got 846 and we will be multiplying it by 24, that is, adding 846 to itself 24 times.
Step 1: 0 + 846 = 846
Step 2: 846 + 846 = 1692
Step 3: 1692 + 846 = 2538
Step 4: 2538 + 846 = 3384
Step 5: 3384 + 846 = 4230
Step 6: 4230 + 846 = 5076
Step 7: 5076 + 846 = 5922
Step 8: 5922 + 846 = 6768
Step 9: 6768 + 846 = 7614
Step 10: 7614 + 846 = 8460
Step 11: 8460 + 846 = 9306
Step 12: 9306 + 846 = 10152
Step 13: 10152 + 846 = 10998
Step 14: 10998 + 846 = 11844
Step 15: 11844 + 846 = 12690
Step 16: 12690 + 846 = 13536
Step 17: 13536 + 846 = 14382
Step 18: 14382 + 846 = 15228
Step 19: 15228 + 846 = 16074
Step 20: 16074 + 846 = 16920
Step 21: 16920 + 846 = 17766
Step 22: 17766 + 846 = 18612
Step 23: 18612 + 846 = 19458
Step 24: 19458 + 846 = 20304

So, 846*24 = 20304