Sure thing, let's get straight to it. We start with 904 and we're going to multiply it by 48, which means adding 904 to itself 48 times.
Step 1: 0 + 904 = 904
Step 2: 904 + 904 = 1808
Step 3: 1808 + 904 = 2712
Step 4: 2712 + 904 = 3616
Step 5: 3616 + 904 = 4520
Step 6: 4520 + 904 = 5424
Step 7: 5424 + 904 = 6328
Step 8: 6328 + 904 = 7232
Step 9: 7232 + 904 = 8136
Step 10: 8136 + 904 = 9040
Step 11: 9040 + 904 = 9944
Step 12: 9944 + 904 = 10848
Step 13: 10848 + 904 = 11752
Step 14: 11752 + 904 = 12656
Step 15: 12656 + 904 = 13560
Step 16: 13560 + 904 = 14464
Step 17: 14464 + 904 = 15368
Step 18: 15368 + 904 = 16272
Step 19: 16272 + 904 = 17176
Step 20: 17176 + 904 = 18080
Step 21: 18080 + 904 = 18984
Step 22: 18984 + 904 = 19888
Step 23: 19888 + 904 = 20792
Step 24: 20792 + 904 = 21696
Step 25: 21696 + 904 = 22600
Step 26: 22600 + 904 = 23504
Step 27: 23504 + 904 = 24408
Step 28: 24408 + 904 = 25312
Step 29: 25312 + 904 = 26216
Step 30: 26216 + 904 = 27120
Step 31: 27120 + 904 = 28024
Step 32: 28024 + 904 = 28928
Step 33: 28928 + 904 = 29832
Step 34: 29832 + 904 = 30736
Step 35: 30736 + 904 = 31640
Step 36: 31640 + 904 = 32544
Step 37: 32544 + 904 = 33448
Step 38: 33448 + 904 = 34352
Step 39: 34352 + 904 = 35256
Step 40: 35256 + 904 = 36160
Step 41: 36160 + 904 = 37064
Step 42: 37064 + 904 = 37968
Step 43: 37968 + 904 = 38872
Step 44: 38872 + 904 = 39776
Step 45: 39776 + 904 = 40680
Step 46: 40680 + 904 = 41584
Step 47: 41584 + 904 = 42488
Step 48: 42488 + 904 = 43392

So, 904*48 = 43392