Let's get this math done. We have 567 and we're going to multiply it by 77. This is the same as taking 567 and adding it to itself 77 times.
Step 1: 0 + 567 = 567
Step 2: 567 + 567 = 1134
Step 3: 1134 + 567 = 1701
Step 4: 1701 + 567 = 2268
Step 5: 2268 + 567 = 2835
Step 6: 2835 + 567 = 3402
Step 7: 3402 + 567 = 3969
Step 8: 3969 + 567 = 4536
Step 9: 4536 + 567 = 5103
Step 10: 5103 + 567 = 5670
Step 11: 5670 + 567 = 6237
Step 12: 6237 + 567 = 6804
Step 13: 6804 + 567 = 7371
Step 14: 7371 + 567 = 7938
Step 15: 7938 + 567 = 8505
Step 16: 8505 + 567 = 9072
Step 17: 9072 + 567 = 9639
Step 18: 9639 + 567 = 10206
Step 19: 10206 + 567 = 10773
Step 20: 10773 + 567 = 11340
Step 21: 11340 + 567 = 11907
Step 22: 11907 + 567 = 12474
Step 23: 12474 + 567 = 13041
Step 24: 13041 + 567 = 13608
Step 25: 13608 + 567 = 14175
Step 26: 14175 + 567 = 14742
Step 27: 14742 + 567 = 15309
Step 28: 15309 + 567 = 15876
Step 29: 15876 + 567 = 16443
Step 30: 16443 + 567 = 17010
Step 31: 17010 + 567 = 17577
Step 32: 17577 + 567 = 18144
Step 33: 18144 + 567 = 18711
Step 34: 18711 + 567 = 19278
Step 35: 19278 + 567 = 19845
Step 36: 19845 + 567 = 20412
Step 37: 20412 + 567 = 20979
Step 38: 20979 + 567 = 21546
Step 39: 21546 + 567 = 22113
Step 40: 22113 + 567 = 22680
Step 41: 22680 + 567 = 23247
Step 42: 23247 + 567 = 23814
Step 43: 23814 + 567 = 24381
Step 44: 24381 + 567 = 24948
Step 45: 24948 + 567 = 25515
Step 46: 25515 + 567 = 26082
Step 47: 26082 + 567 = 26649
Step 48: 26649 + 567 = 27216
Step 49: 27216 + 567 = 27783
Step 50: 27783 + 567 = 28350
Step 51: 28350 + 567 = 28917
Step 52: 28917 + 567 = 29484
Step 53: 29484 + 567 = 30051
Step 54: 30051 + 567 = 30618
Step 55: 30618 + 567 = 31185
Step 56: 31185 + 567 = 31752
Step 57: 31752 + 567 = 32319
Step 58: 32319 + 567 = 32886
Step 59: 32886 + 567 = 33453
Step 60: 33453 + 567 = 34020
Step 61: 34020 + 567 = 34587
Step 62: 34587 + 567 = 35154
Step 63: 35154 + 567 = 35721
Step 64: 35721 + 567 = 36288
Step 65: 36288 + 567 = 36855
Step 66: 36855 + 567 = 37422
Step 67: 37422 + 567 = 37989
Step 68: 37989 + 567 = 38556
Step 69: 38556 + 567 = 39123
Step 70: 39123 + 567 = 39690
Step 71: 39690 + 567 = 40257
Step 72: 40257 + 567 = 40824
Step 73: 40824 + 567 = 41391
Step 74: 41391 + 567 = 41958
Step 75: 41958 + 567 = 42525
Step 76: 42525 + 567 = 43092
Step 77: 43092 + 567 = 43659

So, 567*77 = 43659