Let's roll up our sleeves and solve this. We have 854 and we're going to multiply it by 57, essentially adding 854 to itself 57 times.
Step 1: 0 + 854 = 854
Step 2: 854 + 854 = 1708
Step 3: 1708 + 854 = 2562
Step 4: 2562 + 854 = 3416
Step 5: 3416 + 854 = 4270
Step 6: 4270 + 854 = 5124
Step 7: 5124 + 854 = 5978
Step 8: 5978 + 854 = 6832
Step 9: 6832 + 854 = 7686
Step 10: 7686 + 854 = 8540
Step 11: 8540 + 854 = 9394
Step 12: 9394 + 854 = 10248
Step 13: 10248 + 854 = 11102
Step 14: 11102 + 854 = 11956
Step 15: 11956 + 854 = 12810
Step 16: 12810 + 854 = 13664
Step 17: 13664 + 854 = 14518
Step 18: 14518 + 854 = 15372
Step 19: 15372 + 854 = 16226
Step 20: 16226 + 854 = 17080
Step 21: 17080 + 854 = 17934
Step 22: 17934 + 854 = 18788
Step 23: 18788 + 854 = 19642
Step 24: 19642 + 854 = 20496
Step 25: 20496 + 854 = 21350
Step 26: 21350 + 854 = 22204
Step 27: 22204 + 854 = 23058
Step 28: 23058 + 854 = 23912
Step 29: 23912 + 854 = 24766
Step 30: 24766 + 854 = 25620
Step 31: 25620 + 854 = 26474
Step 32: 26474 + 854 = 27328
Step 33: 27328 + 854 = 28182
Step 34: 28182 + 854 = 29036
Step 35: 29036 + 854 = 29890
Step 36: 29890 + 854 = 30744
Step 37: 30744 + 854 = 31598
Step 38: 31598 + 854 = 32452
Step 39: 32452 + 854 = 33306
Step 40: 33306 + 854 = 34160
Step 41: 34160 + 854 = 35014
Step 42: 35014 + 854 = 35868
Step 43: 35868 + 854 = 36722
Step 44: 36722 + 854 = 37576
Step 45: 37576 + 854 = 38430
Step 46: 38430 + 854 = 39284
Step 47: 39284 + 854 = 40138
Step 48: 40138 + 854 = 40992
Step 49: 40992 + 854 = 41846
Step 50: 41846 + 854 = 42700
Step 51: 42700 + 854 = 43554
Step 52: 43554 + 854 = 44408
Step 53: 44408 + 854 = 45262
Step 54: 45262 + 854 = 46116
Step 55: 46116 + 854 = 46970
Step 56: 46970 + 854 = 47824
Step 57: 47824 + 854 = 48678

So, 854*57 = 48678