Sure thing, let's get straight to it. We start with 580 and we're going to multiply it by 142, which means adding 580 to itself 142 times.
Step 1: 0 + 580 = 580
Step 2: 580 + 580 = 1160
Step 3: 1160 + 580 = 1740
Step 4: 1740 + 580 = 2320
Step 5: 2320 + 580 = 2900
Step 6: 2900 + 580 = 3480
Step 7: 3480 + 580 = 4060
Step 8: 4060 + 580 = 4640
Step 9: 4640 + 580 = 5220
Step 10: 5220 + 580 = 5800
Step 11: 5800 + 580 = 6380
Step 12: 6380 + 580 = 6960
Step 13: 6960 + 580 = 7540
Step 14: 7540 + 580 = 8120
Step 15: 8120 + 580 = 8700
Step 16: 8700 + 580 = 9280
Step 17: 9280 + 580 = 9860
Step 18: 9860 + 580 = 10440
Step 19: 10440 + 580 = 11020
Step 20: 11020 + 580 = 11600
Step 21: 11600 + 580 = 12180
Step 22: 12180 + 580 = 12760
Step 23: 12760 + 580 = 13340
Step 24: 13340 + 580 = 13920
Step 25: 13920 + 580 = 14500
Step 26: 14500 + 580 = 15080
Step 27: 15080 + 580 = 15660
Step 28: 15660 + 580 = 16240
Step 29: 16240 + 580 = 16820
Step 30: 16820 + 580 = 17400
Step 31: 17400 + 580 = 17980
Step 32: 17980 + 580 = 18560
Step 33: 18560 + 580 = 19140
Step 34: 19140 + 580 = 19720
Step 35: 19720 + 580 = 20300
Step 36: 20300 + 580 = 20880
Step 37: 20880 + 580 = 21460
Step 38: 21460 + 580 = 22040
Step 39: 22040 + 580 = 22620
Step 40: 22620 + 580 = 23200
Step 41: 23200 + 580 = 23780
Step 42: 23780 + 580 = 24360
Step 43: 24360 + 580 = 24940
Step 44: 24940 + 580 = 25520
Step 45: 25520 + 580 = 26100
Step 46: 26100 + 580 = 26680
Step 47: 26680 + 580 = 27260
Step 48: 27260 + 580 = 27840
Step 49: 27840 + 580 = 28420
Step 50: 28420 + 580 = 29000
Step 51: 29000 + 580 = 29580
Step 52: 29580 + 580 = 30160
Step 53: 30160 + 580 = 30740
Step 54: 30740 + 580 = 31320
Step 55: 31320 + 580 = 31900
Step 56: 31900 + 580 = 32480
Step 57: 32480 + 580 = 33060
Step 58: 33060 + 580 = 33640
Step 59: 33640 + 580 = 34220
Step 60: 34220 + 580 = 34800
Step 61: 34800 + 580 = 35380
Step 62: 35380 + 580 = 35960
Step 63: 35960 + 580 = 36540
Step 64: 36540 + 580 = 37120
Step 65: 37120 + 580 = 37700
Step 66: 37700 + 580 = 38280
Step 67: 38280 + 580 = 38860
Step 68: 38860 + 580 = 39440
Step 69: 39440 + 580 = 40020
Step 70: 40020 + 580 = 40600
Step 71: 40600 + 580 = 41180
Step 72: 41180 + 580 = 41760
Step 73: 41760 + 580 = 42340
Step 74: 42340 + 580 = 42920
Step 75: 42920 + 580 = 43500
Step 76: 43500 + 580 = 44080
Step 77: 44080 + 580 = 44660
Step 78: 44660 + 580 = 45240
Step 79: 45240 + 580 = 45820
Step 80: 45820 + 580 = 46400
Step 81: 46400 + 580 = 46980
Step 82: 46980 + 580 = 47560
Step 83: 47560 + 580 = 48140
Step 84: 48140 + 580 = 48720
Step 85: 48720 + 580 = 49300
Step 86: 49300 + 580 = 49880
Step 87: 49880 + 580 = 50460
Step 88: 50460 + 580 = 51040
Step 89: 51040 + 580 = 51620
Step 90: 51620 + 580 = 52200
Step 91: 52200 + 580 = 52780
Step 92: 52780 + 580 = 53360
Step 93: 53360 + 580 = 53940
Step 94: 53940 + 580 = 54520
Step 95: 54520 + 580 = 55100
Step 96: 55100 + 580 = 55680
Step 97: 55680 + 580 = 56260
Step 98: 56260 + 580 = 56840
Step 99: 56840 + 580 = 57420
Step 100: 57420 + 580 = 58000
Step 101: 58000 + 580 = 58580
Step 102: 58580 + 580 = 59160
Step 103: 59160 + 580 = 59740
Step 104: 59740 + 580 = 60320
Step 105: 60320 + 580 = 60900
Step 106: 60900 + 580 = 61480
Step 107: 61480 + 580 = 62060
Step 108: 62060 + 580 = 62640
Step 109: 62640 + 580 = 63220
Step 110: 63220 + 580 = 63800
Step 111: 63800 + 580 = 64380
Step 112: 64380 + 580 = 64960
Step 113: 64960 + 580 = 65540
Step 114: 65540 + 580 = 66120
Step 115: 66120 + 580 = 66700
Step 116: 66700 + 580 = 67280
Step 117: 67280 + 580 = 67860
Step 118: 67860 + 580 = 68440
Step 119: 68440 + 580 = 69020
Step 120: 69020 + 580 = 69600
Step 121: 69600 + 580 = 70180
Step 122: 70180 + 580 = 70760
Step 123: 70760 + 580 = 71340
Step 124: 71340 + 580 = 71920
Step 125: 71920 + 580 = 72500
Step 126: 72500 + 580 = 73080
Step 127: 73080 + 580 = 73660
Step 128: 73660 + 580 = 74240
Step 129: 74240 + 580 = 74820
Step 130: 74820 + 580 = 75400
Step 131: 75400 + 580 = 75980
Step 132: 75980 + 580 = 76560
Step 133: 76560 + 580 = 77140
Step 134: 77140 + 580 = 77720
Step 135: 77720 + 580 = 78300
Step 136: 78300 + 580 = 78880
Step 137: 78880 + 580 = 79460
Step 138: 79460 + 580 = 80040
Step 139: 80040 + 580 = 80620
Step 140: 80620 + 580 = 81200
Step 141: 81200 + 580 = 81780
Step 142: 81780 + 580 = 82360

So, 580*142 = 82360