Sure thing, let's get straight to it. We start with 776 and we're going to multiply it by 84, which means adding 776 to itself 84 times.
Step 1: 0 + 776 = 776
Step 2: 776 + 776 = 1552
Step 3: 1552 + 776 = 2328
Step 4: 2328 + 776 = 3104
Step 5: 3104 + 776 = 3880
Step 6: 3880 + 776 = 4656
Step 7: 4656 + 776 = 5432
Step 8: 5432 + 776 = 6208
Step 9: 6208 + 776 = 6984
Step 10: 6984 + 776 = 7760
Step 11: 7760 + 776 = 8536
Step 12: 8536 + 776 = 9312
Step 13: 9312 + 776 = 10088
Step 14: 10088 + 776 = 10864
Step 15: 10864 + 776 = 11640
Step 16: 11640 + 776 = 12416
Step 17: 12416 + 776 = 13192
Step 18: 13192 + 776 = 13968
Step 19: 13968 + 776 = 14744
Step 20: 14744 + 776 = 15520
Step 21: 15520 + 776 = 16296
Step 22: 16296 + 776 = 17072
Step 23: 17072 + 776 = 17848
Step 24: 17848 + 776 = 18624
Step 25: 18624 + 776 = 19400
Step 26: 19400 + 776 = 20176
Step 27: 20176 + 776 = 20952
Step 28: 20952 + 776 = 21728
Step 29: 21728 + 776 = 22504
Step 30: 22504 + 776 = 23280
Step 31: 23280 + 776 = 24056
Step 32: 24056 + 776 = 24832
Step 33: 24832 + 776 = 25608
Step 34: 25608 + 776 = 26384
Step 35: 26384 + 776 = 27160
Step 36: 27160 + 776 = 27936
Step 37: 27936 + 776 = 28712
Step 38: 28712 + 776 = 29488
Step 39: 29488 + 776 = 30264
Step 40: 30264 + 776 = 31040
Step 41: 31040 + 776 = 31816
Step 42: 31816 + 776 = 32592
Step 43: 32592 + 776 = 33368
Step 44: 33368 + 776 = 34144
Step 45: 34144 + 776 = 34920
Step 46: 34920 + 776 = 35696
Step 47: 35696 + 776 = 36472
Step 48: 36472 + 776 = 37248
Step 49: 37248 + 776 = 38024
Step 50: 38024 + 776 = 38800
Step 51: 38800 + 776 = 39576
Step 52: 39576 + 776 = 40352
Step 53: 40352 + 776 = 41128
Step 54: 41128 + 776 = 41904
Step 55: 41904 + 776 = 42680
Step 56: 42680 + 776 = 43456
Step 57: 43456 + 776 = 44232
Step 58: 44232 + 776 = 45008
Step 59: 45008 + 776 = 45784
Step 60: 45784 + 776 = 46560
Step 61: 46560 + 776 = 47336
Step 62: 47336 + 776 = 48112
Step 63: 48112 + 776 = 48888
Step 64: 48888 + 776 = 49664
Step 65: 49664 + 776 = 50440
Step 66: 50440 + 776 = 51216
Step 67: 51216 + 776 = 51992
Step 68: 51992 + 776 = 52768
Step 69: 52768 + 776 = 53544
Step 70: 53544 + 776 = 54320
Step 71: 54320 + 776 = 55096
Step 72: 55096 + 776 = 55872
Step 73: 55872 + 776 = 56648
Step 74: 56648 + 776 = 57424
Step 75: 57424 + 776 = 58200
Step 76: 58200 + 776 = 58976
Step 77: 58976 + 776 = 59752
Step 78: 59752 + 776 = 60528
Step 79: 60528 + 776 = 61304
Step 80: 61304 + 776 = 62080
Step 81: 62080 + 776 = 62856
Step 82: 62856 + 776 = 63632
Step 83: 63632 + 776 = 64408
Step 84: 64408 + 776 = 65184

So, 776*84 = 65184