Let's roll up our sleeves and solve this. We have 654 and we're going to multiply it by 88, essentially adding 654 to itself 88 times.
Step 1: 0 + 654 = 654
Step 2: 654 + 654 = 1308
Step 3: 1308 + 654 = 1962
Step 4: 1962 + 654 = 2616
Step 5: 2616 + 654 = 3270
Step 6: 3270 + 654 = 3924
Step 7: 3924 + 654 = 4578
Step 8: 4578 + 654 = 5232
Step 9: 5232 + 654 = 5886
Step 10: 5886 + 654 = 6540
Step 11: 6540 + 654 = 7194
Step 12: 7194 + 654 = 7848
Step 13: 7848 + 654 = 8502
Step 14: 8502 + 654 = 9156
Step 15: 9156 + 654 = 9810
Step 16: 9810 + 654 = 10464
Step 17: 10464 + 654 = 11118
Step 18: 11118 + 654 = 11772
Step 19: 11772 + 654 = 12426
Step 20: 12426 + 654 = 13080
Step 21: 13080 + 654 = 13734
Step 22: 13734 + 654 = 14388
Step 23: 14388 + 654 = 15042
Step 24: 15042 + 654 = 15696
Step 25: 15696 + 654 = 16350
Step 26: 16350 + 654 = 17004
Step 27: 17004 + 654 = 17658
Step 28: 17658 + 654 = 18312
Step 29: 18312 + 654 = 18966
Step 30: 18966 + 654 = 19620
Step 31: 19620 + 654 = 20274
Step 32: 20274 + 654 = 20928
Step 33: 20928 + 654 = 21582
Step 34: 21582 + 654 = 22236
Step 35: 22236 + 654 = 22890
Step 36: 22890 + 654 = 23544
Step 37: 23544 + 654 = 24198
Step 38: 24198 + 654 = 24852
Step 39: 24852 + 654 = 25506
Step 40: 25506 + 654 = 26160
Step 41: 26160 + 654 = 26814
Step 42: 26814 + 654 = 27468
Step 43: 27468 + 654 = 28122
Step 44: 28122 + 654 = 28776
Step 45: 28776 + 654 = 29430
Step 46: 29430 + 654 = 30084
Step 47: 30084 + 654 = 30738
Step 48: 30738 + 654 = 31392
Step 49: 31392 + 654 = 32046
Step 50: 32046 + 654 = 32700
Step 51: 32700 + 654 = 33354
Step 52: 33354 + 654 = 34008
Step 53: 34008 + 654 = 34662
Step 54: 34662 + 654 = 35316
Step 55: 35316 + 654 = 35970
Step 56: 35970 + 654 = 36624
Step 57: 36624 + 654 = 37278
Step 58: 37278 + 654 = 37932
Step 59: 37932 + 654 = 38586
Step 60: 38586 + 654 = 39240
Step 61: 39240 + 654 = 39894
Step 62: 39894 + 654 = 40548
Step 63: 40548 + 654 = 41202
Step 64: 41202 + 654 = 41856
Step 65: 41856 + 654 = 42510
Step 66: 42510 + 654 = 43164
Step 67: 43164 + 654 = 43818
Step 68: 43818 + 654 = 44472
Step 69: 44472 + 654 = 45126
Step 70: 45126 + 654 = 45780
Step 71: 45780 + 654 = 46434
Step 72: 46434 + 654 = 47088
Step 73: 47088 + 654 = 47742
Step 74: 47742 + 654 = 48396
Step 75: 48396 + 654 = 49050
Step 76: 49050 + 654 = 49704
Step 77: 49704 + 654 = 50358
Step 78: 50358 + 654 = 51012
Step 79: 51012 + 654 = 51666
Step 80: 51666 + 654 = 52320
Step 81: 52320 + 654 = 52974
Step 82: 52974 + 654 = 53628
Step 83: 53628 + 654 = 54282
Step 84: 54282 + 654 = 54936
Step 85: 54936 + 654 = 55590
Step 86: 55590 + 654 = 56244
Step 87: 56244 + 654 = 56898
Step 88: 56898 + 654 = 57552

So, 654*88 = 57552