Alright, let's solve this math problem step by step. First, we have the number 679. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 86. So, we're going to take the number 679 and add it to itself 86 times.
Step 1: 0 + 679 = 679
Step 2: 679 + 679 = 1358
Step 3: 1358 + 679 = 2037
Step 4: 2037 + 679 = 2716
Step 5: 2716 + 679 = 3395
Step 6: 3395 + 679 = 4074
Step 7: 4074 + 679 = 4753
Step 8: 4753 + 679 = 5432
Step 9: 5432 + 679 = 6111
Step 10: 6111 + 679 = 6790
Step 11: 6790 + 679 = 7469
Step 12: 7469 + 679 = 8148
Step 13: 8148 + 679 = 8827
Step 14: 8827 + 679 = 9506
Step 15: 9506 + 679 = 10185
Step 16: 10185 + 679 = 10864
Step 17: 10864 + 679 = 11543
Step 18: 11543 + 679 = 12222
Step 19: 12222 + 679 = 12901
Step 20: 12901 + 679 = 13580
Step 21: 13580 + 679 = 14259
Step 22: 14259 + 679 = 14938
Step 23: 14938 + 679 = 15617
Step 24: 15617 + 679 = 16296
Step 25: 16296 + 679 = 16975
Step 26: 16975 + 679 = 17654
Step 27: 17654 + 679 = 18333
Step 28: 18333 + 679 = 19012
Step 29: 19012 + 679 = 19691
Step 30: 19691 + 679 = 20370
Step 31: 20370 + 679 = 21049
Step 32: 21049 + 679 = 21728
Step 33: 21728 + 679 = 22407
Step 34: 22407 + 679 = 23086
Step 35: 23086 + 679 = 23765
Step 36: 23765 + 679 = 24444
Step 37: 24444 + 679 = 25123
Step 38: 25123 + 679 = 25802
Step 39: 25802 + 679 = 26481
Step 40: 26481 + 679 = 27160
Step 41: 27160 + 679 = 27839
Step 42: 27839 + 679 = 28518
Step 43: 28518 + 679 = 29197
Step 44: 29197 + 679 = 29876
Step 45: 29876 + 679 = 30555
Step 46: 30555 + 679 = 31234
Step 47: 31234 + 679 = 31913
Step 48: 31913 + 679 = 32592
Step 49: 32592 + 679 = 33271
Step 50: 33271 + 679 = 33950
Step 51: 33950 + 679 = 34629
Step 52: 34629 + 679 = 35308
Step 53: 35308 + 679 = 35987
Step 54: 35987 + 679 = 36666
Step 55: 36666 + 679 = 37345
Step 56: 37345 + 679 = 38024
Step 57: 38024 + 679 = 38703
Step 58: 38703 + 679 = 39382
Step 59: 39382 + 679 = 40061
Step 60: 40061 + 679 = 40740
Step 61: 40740 + 679 = 41419
Step 62: 41419 + 679 = 42098
Step 63: 42098 + 679 = 42777
Step 64: 42777 + 679 = 43456
Step 65: 43456 + 679 = 44135
Step 66: 44135 + 679 = 44814
Step 67: 44814 + 679 = 45493
Step 68: 45493 + 679 = 46172
Step 69: 46172 + 679 = 46851
Step 70: 46851 + 679 = 47530
Step 71: 47530 + 679 = 48209
Step 72: 48209 + 679 = 48888
Step 73: 48888 + 679 = 49567
Step 74: 49567 + 679 = 50246
Step 75: 50246 + 679 = 50925
Step 76: 50925 + 679 = 51604
Step 77: 51604 + 679 = 52283
Step 78: 52283 + 679 = 52962
Step 79: 52962 + 679 = 53641
Step 80: 53641 + 679 = 54320
Step 81: 54320 + 679 = 54999
Step 82: 54999 + 679 = 55678
Step 83: 55678 + 679 = 56357
Step 84: 56357 + 679 = 57036
Step 85: 57036 + 679 = 57715
Step 86: 57715 + 679 = 58394

So, 679*86 = 58394