Let's get this math done. We have 984 and we're going to multiply it by 39. This is the same as taking 984 and adding it to itself 39 times.
Step 1: 0 + 984 = 984
Step 2: 984 + 984 = 1968
Step 3: 1968 + 984 = 2952
Step 4: 2952 + 984 = 3936
Step 5: 3936 + 984 = 4920
Step 6: 4920 + 984 = 5904
Step 7: 5904 + 984 = 6888
Step 8: 6888 + 984 = 7872
Step 9: 7872 + 984 = 8856
Step 10: 8856 + 984 = 9840
Step 11: 9840 + 984 = 10824
Step 12: 10824 + 984 = 11808
Step 13: 11808 + 984 = 12792
Step 14: 12792 + 984 = 13776
Step 15: 13776 + 984 = 14760
Step 16: 14760 + 984 = 15744
Step 17: 15744 + 984 = 16728
Step 18: 16728 + 984 = 17712
Step 19: 17712 + 984 = 18696
Step 20: 18696 + 984 = 19680
Step 21: 19680 + 984 = 20664
Step 22: 20664 + 984 = 21648
Step 23: 21648 + 984 = 22632
Step 24: 22632 + 984 = 23616
Step 25: 23616 + 984 = 24600
Step 26: 24600 + 984 = 25584
Step 27: 25584 + 984 = 26568
Step 28: 26568 + 984 = 27552
Step 29: 27552 + 984 = 28536
Step 30: 28536 + 984 = 29520
Step 31: 29520 + 984 = 30504
Step 32: 30504 + 984 = 31488
Step 33: 31488 + 984 = 32472
Step 34: 32472 + 984 = 33456
Step 35: 33456 + 984 = 34440
Step 36: 34440 + 984 = 35424
Step 37: 35424 + 984 = 36408
Step 38: 36408 + 984 = 37392
Step 39: 37392 + 984 = 38376

So, 984*39 = 38376