OK, let's work through this together. We're starting with 714 and we're going to multiply it by 77, which means we add 714 to itself 77 times.
Step 1: 0 + 714 = 714
Step 2: 714 + 714 = 1428
Step 3: 1428 + 714 = 2142
Step 4: 2142 + 714 = 2856
Step 5: 2856 + 714 = 3570
Step 6: 3570 + 714 = 4284
Step 7: 4284 + 714 = 4998
Step 8: 4998 + 714 = 5712
Step 9: 5712 + 714 = 6426
Step 10: 6426 + 714 = 7140
Step 11: 7140 + 714 = 7854
Step 12: 7854 + 714 = 8568
Step 13: 8568 + 714 = 9282
Step 14: 9282 + 714 = 9996
Step 15: 9996 + 714 = 10710
Step 16: 10710 + 714 = 11424
Step 17: 11424 + 714 = 12138
Step 18: 12138 + 714 = 12852
Step 19: 12852 + 714 = 13566
Step 20: 13566 + 714 = 14280
Step 21: 14280 + 714 = 14994
Step 22: 14994 + 714 = 15708
Step 23: 15708 + 714 = 16422
Step 24: 16422 + 714 = 17136
Step 25: 17136 + 714 = 17850
Step 26: 17850 + 714 = 18564
Step 27: 18564 + 714 = 19278
Step 28: 19278 + 714 = 19992
Step 29: 19992 + 714 = 20706
Step 30: 20706 + 714 = 21420
Step 31: 21420 + 714 = 22134
Step 32: 22134 + 714 = 22848
Step 33: 22848 + 714 = 23562
Step 34: 23562 + 714 = 24276
Step 35: 24276 + 714 = 24990
Step 36: 24990 + 714 = 25704
Step 37: 25704 + 714 = 26418
Step 38: 26418 + 714 = 27132
Step 39: 27132 + 714 = 27846
Step 40: 27846 + 714 = 28560
Step 41: 28560 + 714 = 29274
Step 42: 29274 + 714 = 29988
Step 43: 29988 + 714 = 30702
Step 44: 30702 + 714 = 31416
Step 45: 31416 + 714 = 32130
Step 46: 32130 + 714 = 32844
Step 47: 32844 + 714 = 33558
Step 48: 33558 + 714 = 34272
Step 49: 34272 + 714 = 34986
Step 50: 34986 + 714 = 35700
Step 51: 35700 + 714 = 36414
Step 52: 36414 + 714 = 37128
Step 53: 37128 + 714 = 37842
Step 54: 37842 + 714 = 38556
Step 55: 38556 + 714 = 39270
Step 56: 39270 + 714 = 39984
Step 57: 39984 + 714 = 40698
Step 58: 40698 + 714 = 41412
Step 59: 41412 + 714 = 42126
Step 60: 42126 + 714 = 42840
Step 61: 42840 + 714 = 43554
Step 62: 43554 + 714 = 44268
Step 63: 44268 + 714 = 44982
Step 64: 44982 + 714 = 45696
Step 65: 45696 + 714 = 46410
Step 66: 46410 + 714 = 47124
Step 67: 47124 + 714 = 47838
Step 68: 47838 + 714 = 48552
Step 69: 48552 + 714 = 49266
Step 70: 49266 + 714 = 49980
Step 71: 49980 + 714 = 50694
Step 72: 50694 + 714 = 51408
Step 73: 51408 + 714 = 52122
Step 74: 52122 + 714 = 52836
Step 75: 52836 + 714 = 53550
Step 76: 53550 + 714 = 54264
Step 77: 54264 + 714 = 54978

So, 714*77 = 54978