Let's get this math done. We have 570 and we're going to multiply it by 143. This is the same as taking 570 and adding it to itself 143 times.
Step 1: 0 + 570 = 570
Step 2: 570 + 570 = 1140
Step 3: 1140 + 570 = 1710
Step 4: 1710 + 570 = 2280
Step 5: 2280 + 570 = 2850
Step 6: 2850 + 570 = 3420
Step 7: 3420 + 570 = 3990
Step 8: 3990 + 570 = 4560
Step 9: 4560 + 570 = 5130
Step 10: 5130 + 570 = 5700
Step 11: 5700 + 570 = 6270
Step 12: 6270 + 570 = 6840
Step 13: 6840 + 570 = 7410
Step 14: 7410 + 570 = 7980
Step 15: 7980 + 570 = 8550
Step 16: 8550 + 570 = 9120
Step 17: 9120 + 570 = 9690
Step 18: 9690 + 570 = 10260
Step 19: 10260 + 570 = 10830
Step 20: 10830 + 570 = 11400
Step 21: 11400 + 570 = 11970
Step 22: 11970 + 570 = 12540
Step 23: 12540 + 570 = 13110
Step 24: 13110 + 570 = 13680
Step 25: 13680 + 570 = 14250
Step 26: 14250 + 570 = 14820
Step 27: 14820 + 570 = 15390
Step 28: 15390 + 570 = 15960
Step 29: 15960 + 570 = 16530
Step 30: 16530 + 570 = 17100
Step 31: 17100 + 570 = 17670
Step 32: 17670 + 570 = 18240
Step 33: 18240 + 570 = 18810
Step 34: 18810 + 570 = 19380
Step 35: 19380 + 570 = 19950
Step 36: 19950 + 570 = 20520
Step 37: 20520 + 570 = 21090
Step 38: 21090 + 570 = 21660
Step 39: 21660 + 570 = 22230
Step 40: 22230 + 570 = 22800
Step 41: 22800 + 570 = 23370
Step 42: 23370 + 570 = 23940
Step 43: 23940 + 570 = 24510
Step 44: 24510 + 570 = 25080
Step 45: 25080 + 570 = 25650
Step 46: 25650 + 570 = 26220
Step 47: 26220 + 570 = 26790
Step 48: 26790 + 570 = 27360
Step 49: 27360 + 570 = 27930
Step 50: 27930 + 570 = 28500
Step 51: 28500 + 570 = 29070
Step 52: 29070 + 570 = 29640
Step 53: 29640 + 570 = 30210
Step 54: 30210 + 570 = 30780
Step 55: 30780 + 570 = 31350
Step 56: 31350 + 570 = 31920
Step 57: 31920 + 570 = 32490
Step 58: 32490 + 570 = 33060
Step 59: 33060 + 570 = 33630
Step 60: 33630 + 570 = 34200
Step 61: 34200 + 570 = 34770
Step 62: 34770 + 570 = 35340
Step 63: 35340 + 570 = 35910
Step 64: 35910 + 570 = 36480
Step 65: 36480 + 570 = 37050
Step 66: 37050 + 570 = 37620
Step 67: 37620 + 570 = 38190
Step 68: 38190 + 570 = 38760
Step 69: 38760 + 570 = 39330
Step 70: 39330 + 570 = 39900
Step 71: 39900 + 570 = 40470
Step 72: 40470 + 570 = 41040
Step 73: 41040 + 570 = 41610
Step 74: 41610 + 570 = 42180
Step 75: 42180 + 570 = 42750
Step 76: 42750 + 570 = 43320
Step 77: 43320 + 570 = 43890
Step 78: 43890 + 570 = 44460
Step 79: 44460 + 570 = 45030
Step 80: 45030 + 570 = 45600
Step 81: 45600 + 570 = 46170
Step 82: 46170 + 570 = 46740
Step 83: 46740 + 570 = 47310
Step 84: 47310 + 570 = 47880
Step 85: 47880 + 570 = 48450
Step 86: 48450 + 570 = 49020
Step 87: 49020 + 570 = 49590
Step 88: 49590 + 570 = 50160
Step 89: 50160 + 570 = 50730
Step 90: 50730 + 570 = 51300
Step 91: 51300 + 570 = 51870
Step 92: 51870 + 570 = 52440
Step 93: 52440 + 570 = 53010
Step 94: 53010 + 570 = 53580
Step 95: 53580 + 570 = 54150
Step 96: 54150 + 570 = 54720
Step 97: 54720 + 570 = 55290
Step 98: 55290 + 570 = 55860
Step 99: 55860 + 570 = 56430
Step 100: 56430 + 570 = 57000
Step 101: 57000 + 570 = 57570
Step 102: 57570 + 570 = 58140
Step 103: 58140 + 570 = 58710
Step 104: 58710 + 570 = 59280
Step 105: 59280 + 570 = 59850
Step 106: 59850 + 570 = 60420
Step 107: 60420 + 570 = 60990
Step 108: 60990 + 570 = 61560
Step 109: 61560 + 570 = 62130
Step 110: 62130 + 570 = 62700
Step 111: 62700 + 570 = 63270
Step 112: 63270 + 570 = 63840
Step 113: 63840 + 570 = 64410
Step 114: 64410 + 570 = 64980
Step 115: 64980 + 570 = 65550
Step 116: 65550 + 570 = 66120
Step 117: 66120 + 570 = 66690
Step 118: 66690 + 570 = 67260
Step 119: 67260 + 570 = 67830
Step 120: 67830 + 570 = 68400
Step 121: 68400 + 570 = 68970
Step 122: 68970 + 570 = 69540
Step 123: 69540 + 570 = 70110
Step 124: 70110 + 570 = 70680
Step 125: 70680 + 570 = 71250
Step 126: 71250 + 570 = 71820
Step 127: 71820 + 570 = 72390
Step 128: 72390 + 570 = 72960
Step 129: 72960 + 570 = 73530
Step 130: 73530 + 570 = 74100
Step 131: 74100 + 570 = 74670
Step 132: 74670 + 570 = 75240
Step 133: 75240 + 570 = 75810
Step 134: 75810 + 570 = 76380
Step 135: 76380 + 570 = 76950
Step 136: 76950 + 570 = 77520
Step 137: 77520 + 570 = 78090
Step 138: 78090 + 570 = 78660
Step 139: 78660 + 570 = 79230
Step 140: 79230 + 570 = 79800
Step 141: 79800 + 570 = 80370
Step 142: 80370 + 570 = 80940
Step 143: 80940 + 570 = 81510

So, 570*143 = 81510