OK, let's work through this together. We're starting with 576 and we're going to multiply it by 173, which means we add 576 to itself 173 times.
Step 1: 0 + 576 = 576
Step 2: 576 + 576 = 1152
Step 3: 1152 + 576 = 1728
Step 4: 1728 + 576 = 2304
Step 5: 2304 + 576 = 2880
Step 6: 2880 + 576 = 3456
Step 7: 3456 + 576 = 4032
Step 8: 4032 + 576 = 4608
Step 9: 4608 + 576 = 5184
Step 10: 5184 + 576 = 5760
Step 11: 5760 + 576 = 6336
Step 12: 6336 + 576 = 6912
Step 13: 6912 + 576 = 7488
Step 14: 7488 + 576 = 8064
Step 15: 8064 + 576 = 8640
Step 16: 8640 + 576 = 9216
Step 17: 9216 + 576 = 9792
Step 18: 9792 + 576 = 10368
Step 19: 10368 + 576 = 10944
Step 20: 10944 + 576 = 11520
Step 21: 11520 + 576 = 12096
Step 22: 12096 + 576 = 12672
Step 23: 12672 + 576 = 13248
Step 24: 13248 + 576 = 13824
Step 25: 13824 + 576 = 14400
Step 26: 14400 + 576 = 14976
Step 27: 14976 + 576 = 15552
Step 28: 15552 + 576 = 16128
Step 29: 16128 + 576 = 16704
Step 30: 16704 + 576 = 17280
Step 31: 17280 + 576 = 17856
Step 32: 17856 + 576 = 18432
Step 33: 18432 + 576 = 19008
Step 34: 19008 + 576 = 19584
Step 35: 19584 + 576 = 20160
Step 36: 20160 + 576 = 20736
Step 37: 20736 + 576 = 21312
Step 38: 21312 + 576 = 21888
Step 39: 21888 + 576 = 22464
Step 40: 22464 + 576 = 23040
Step 41: 23040 + 576 = 23616
Step 42: 23616 + 576 = 24192
Step 43: 24192 + 576 = 24768
Step 44: 24768 + 576 = 25344
Step 45: 25344 + 576 = 25920
Step 46: 25920 + 576 = 26496
Step 47: 26496 + 576 = 27072
Step 48: 27072 + 576 = 27648
Step 49: 27648 + 576 = 28224
Step 50: 28224 + 576 = 28800
Step 51: 28800 + 576 = 29376
Step 52: 29376 + 576 = 29952
Step 53: 29952 + 576 = 30528
Step 54: 30528 + 576 = 31104
Step 55: 31104 + 576 = 31680
Step 56: 31680 + 576 = 32256
Step 57: 32256 + 576 = 32832
Step 58: 32832 + 576 = 33408
Step 59: 33408 + 576 = 33984
Step 60: 33984 + 576 = 34560
Step 61: 34560 + 576 = 35136
Step 62: 35136 + 576 = 35712
Step 63: 35712 + 576 = 36288
Step 64: 36288 + 576 = 36864
Step 65: 36864 + 576 = 37440
Step 66: 37440 + 576 = 38016
Step 67: 38016 + 576 = 38592
Step 68: 38592 + 576 = 39168
Step 69: 39168 + 576 = 39744
Step 70: 39744 + 576 = 40320
Step 71: 40320 + 576 = 40896
Step 72: 40896 + 576 = 41472
Step 73: 41472 + 576 = 42048
Step 74: 42048 + 576 = 42624
Step 75: 42624 + 576 = 43200
Step 76: 43200 + 576 = 43776
Step 77: 43776 + 576 = 44352
Step 78: 44352 + 576 = 44928
Step 79: 44928 + 576 = 45504
Step 80: 45504 + 576 = 46080
Step 81: 46080 + 576 = 46656
Step 82: 46656 + 576 = 47232
Step 83: 47232 + 576 = 47808
Step 84: 47808 + 576 = 48384
Step 85: 48384 + 576 = 48960
Step 86: 48960 + 576 = 49536
Step 87: 49536 + 576 = 50112
Step 88: 50112 + 576 = 50688
Step 89: 50688 + 576 = 51264
Step 90: 51264 + 576 = 51840
Step 91: 51840 + 576 = 52416
Step 92: 52416 + 576 = 52992
Step 93: 52992 + 576 = 53568
Step 94: 53568 + 576 = 54144
Step 95: 54144 + 576 = 54720
Step 96: 54720 + 576 = 55296
Step 97: 55296 + 576 = 55872
Step 98: 55872 + 576 = 56448
Step 99: 56448 + 576 = 57024
Step 100: 57024 + 576 = 57600
Step 101: 57600 + 576 = 58176
Step 102: 58176 + 576 = 58752
Step 103: 58752 + 576 = 59328
Step 104: 59328 + 576 = 59904
Step 105: 59904 + 576 = 60480
Step 106: 60480 + 576 = 61056
Step 107: 61056 + 576 = 61632
Step 108: 61632 + 576 = 62208
Step 109: 62208 + 576 = 62784
Step 110: 62784 + 576 = 63360
Step 111: 63360 + 576 = 63936
Step 112: 63936 + 576 = 64512
Step 113: 64512 + 576 = 65088
Step 114: 65088 + 576 = 65664
Step 115: 65664 + 576 = 66240
Step 116: 66240 + 576 = 66816
Step 117: 66816 + 576 = 67392
Step 118: 67392 + 576 = 67968
Step 119: 67968 + 576 = 68544
Step 120: 68544 + 576 = 69120
Step 121: 69120 + 576 = 69696
Step 122: 69696 + 576 = 70272
Step 123: 70272 + 576 = 70848
Step 124: 70848 + 576 = 71424
Step 125: 71424 + 576 = 72000
Step 126: 72000 + 576 = 72576
Step 127: 72576 + 576 = 73152
Step 128: 73152 + 576 = 73728
Step 129: 73728 + 576 = 74304
Step 130: 74304 + 576 = 74880
Step 131: 74880 + 576 = 75456
Step 132: 75456 + 576 = 76032
Step 133: 76032 + 576 = 76608
Step 134: 76608 + 576 = 77184
Step 135: 77184 + 576 = 77760
Step 136: 77760 + 576 = 78336
Step 137: 78336 + 576 = 78912
Step 138: 78912 + 576 = 79488
Step 139: 79488 + 576 = 80064
Step 140: 80064 + 576 = 80640
Step 141: 80640 + 576 = 81216
Step 142: 81216 + 576 = 81792
Step 143: 81792 + 576 = 82368
Step 144: 82368 + 576 = 82944
Step 145: 82944 + 576 = 83520
Step 146: 83520 + 576 = 84096
Step 147: 84096 + 576 = 84672
Step 148: 84672 + 576 = 85248
Step 149: 85248 + 576 = 85824
Step 150: 85824 + 576 = 86400
Step 151: 86400 + 576 = 86976
Step 152: 86976 + 576 = 87552
Step 153: 87552 + 576 = 88128
Step 154: 88128 + 576 = 88704
Step 155: 88704 + 576 = 89280
Step 156: 89280 + 576 = 89856
Step 157: 89856 + 576 = 90432
Step 158: 90432 + 576 = 91008
Step 159: 91008 + 576 = 91584
Step 160: 91584 + 576 = 92160
Step 161: 92160 + 576 = 92736
Step 162: 92736 + 576 = 93312
Step 163: 93312 + 576 = 93888
Step 164: 93888 + 576 = 94464
Step 165: 94464 + 576 = 95040
Step 166: 95040 + 576 = 95616
Step 167: 95616 + 576 = 96192
Step 168: 96192 + 576 = 96768
Step 169: 96768 + 576 = 97344
Step 170: 97344 + 576 = 97920
Step 171: 97920 + 576 = 98496
Step 172: 98496 + 576 = 99072
Step 173: 99072 + 576 = 99648

So, 576*173 = 99648