Sure thing! We've got 88 and we're gonna multiply it by 66. That's the same as adding 88 to itself 66 times.
Step 1: 0 + 88 = 88
Step 2: 88 + 88 = 176
Step 3: 176 + 88 = 264
Step 4: 264 + 88 = 352
Step 5: 352 + 88 = 440
Step 6: 440 + 88 = 528
Step 7: 528 + 88 = 616
Step 8: 616 + 88 = 704
Step 9: 704 + 88 = 792
Step 10: 792 + 88 = 880
Step 11: 880 + 88 = 968
Step 12: 968 + 88 = 1056
Step 13: 1056 + 88 = 1144
Step 14: 1144 + 88 = 1232
Step 15: 1232 + 88 = 1320
Step 16: 1320 + 88 = 1408
Step 17: 1408 + 88 = 1496
Step 18: 1496 + 88 = 1584
Step 19: 1584 + 88 = 1672
Step 20: 1672 + 88 = 1760
Step 21: 1760 + 88 = 1848
Step 22: 1848 + 88 = 1936
Step 23: 1936 + 88 = 2024
Step 24: 2024 + 88 = 2112
Step 25: 2112 + 88 = 2200
Step 26: 2200 + 88 = 2288
Step 27: 2288 + 88 = 2376
Step 28: 2376 + 88 = 2464
Step 29: 2464 + 88 = 2552
Step 30: 2552 + 88 = 2640
Step 31: 2640 + 88 = 2728
Step 32: 2728 + 88 = 2816
Step 33: 2816 + 88 = 2904
Step 34: 2904 + 88 = 2992
Step 35: 2992 + 88 = 3080
Step 36: 3080 + 88 = 3168
Step 37: 3168 + 88 = 3256
Step 38: 3256 + 88 = 3344
Step 39: 3344 + 88 = 3432
Step 40: 3432 + 88 = 3520
Step 41: 3520 + 88 = 3608
Step 42: 3608 + 88 = 3696
Step 43: 3696 + 88 = 3784
Step 44: 3784 + 88 = 3872
Step 45: 3872 + 88 = 3960
Step 46: 3960 + 88 = 4048
Step 47: 4048 + 88 = 4136
Step 48: 4136 + 88 = 4224
Step 49: 4224 + 88 = 4312
Step 50: 4312 + 88 = 4400
Step 51: 4400 + 88 = 4488
Step 52: 4488 + 88 = 4576
Step 53: 4576 + 88 = 4664
Step 54: 4664 + 88 = 4752
Step 55: 4752 + 88 = 4840
Step 56: 4840 + 88 = 4928
Step 57: 4928 + 88 = 5016
Step 58: 5016 + 88 = 5104
Step 59: 5104 + 88 = 5192
Step 60: 5192 + 88 = 5280
Step 61: 5280 + 88 = 5368
Step 62: 5368 + 88 = 5456
Step 63: 5456 + 88 = 5544
Step 64: 5544 + 88 = 5632
Step 65: 5632 + 88 = 5720
Step 66: 5720 + 88 = 5808

So, 88*66 = 5808