Alright, let's solve this math problem step by step. First, we have the number 885. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 24. So, we're going to take the number 885 and add it to itself 24 times.
Step 1: 0 + 885 = 885
Step 2: 885 + 885 = 1770
Step 3: 1770 + 885 = 2655
Step 4: 2655 + 885 = 3540
Step 5: 3540 + 885 = 4425
Step 6: 4425 + 885 = 5310
Step 7: 5310 + 885 = 6195
Step 8: 6195 + 885 = 7080
Step 9: 7080 + 885 = 7965
Step 10: 7965 + 885 = 8850
Step 11: 8850 + 885 = 9735
Step 12: 9735 + 885 = 10620
Step 13: 10620 + 885 = 11505
Step 14: 11505 + 885 = 12390
Step 15: 12390 + 885 = 13275
Step 16: 13275 + 885 = 14160
Step 17: 14160 + 885 = 15045
Step 18: 15045 + 885 = 15930
Step 19: 15930 + 885 = 16815
Step 20: 16815 + 885 = 17700
Step 21: 17700 + 885 = 18585
Step 22: 18585 + 885 = 19470
Step 23: 19470 + 885 = 20355
Step 24: 20355 + 885 = 21240

So, 885*24 = 21240