Alright, let's solve this math problem step by step. First, we have the number 663. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 225. So, we're going to take the number 663 and add it to itself 225 times.
Step 1: 0 + 663 = 663
Step 2: 663 + 663 = 1326
Step 3: 1326 + 663 = 1989
Step 4: 1989 + 663 = 2652
Step 5: 2652 + 663 = 3315
Step 6: 3315 + 663 = 3978
Step 7: 3978 + 663 = 4641
Step 8: 4641 + 663 = 5304
Step 9: 5304 + 663 = 5967
Step 10: 5967 + 663 = 6630
Step 11: 6630 + 663 = 7293
Step 12: 7293 + 663 = 7956
Step 13: 7956 + 663 = 8619
Step 14: 8619 + 663 = 9282
Step 15: 9282 + 663 = 9945
Step 16: 9945 + 663 = 10608
Step 17: 10608 + 663 = 11271
Step 18: 11271 + 663 = 11934
Step 19: 11934 + 663 = 12597
Step 20: 12597 + 663 = 13260
Step 21: 13260 + 663 = 13923
Step 22: 13923 + 663 = 14586
Step 23: 14586 + 663 = 15249
Step 24: 15249 + 663 = 15912
Step 25: 15912 + 663 = 16575
Step 26: 16575 + 663 = 17238
Step 27: 17238 + 663 = 17901
Step 28: 17901 + 663 = 18564
Step 29: 18564 + 663 = 19227
Step 30: 19227 + 663 = 19890
Step 31: 19890 + 663 = 20553
Step 32: 20553 + 663 = 21216
Step 33: 21216 + 663 = 21879
Step 34: 21879 + 663 = 22542
Step 35: 22542 + 663 = 23205
Step 36: 23205 + 663 = 23868
Step 37: 23868 + 663 = 24531
Step 38: 24531 + 663 = 25194
Step 39: 25194 + 663 = 25857
Step 40: 25857 + 663 = 26520
Step 41: 26520 + 663 = 27183
Step 42: 27183 + 663 = 27846
Step 43: 27846 + 663 = 28509
Step 44: 28509 + 663 = 29172
Step 45: 29172 + 663 = 29835
Step 46: 29835 + 663 = 30498
Step 47: 30498 + 663 = 31161
Step 48: 31161 + 663 = 31824
Step 49: 31824 + 663 = 32487
Step 50: 32487 + 663 = 33150
Step 51: 33150 + 663 = 33813
Step 52: 33813 + 663 = 34476
Step 53: 34476 + 663 = 35139
Step 54: 35139 + 663 = 35802
Step 55: 35802 + 663 = 36465
Step 56: 36465 + 663 = 37128
Step 57: 37128 + 663 = 37791
Step 58: 37791 + 663 = 38454
Step 59: 38454 + 663 = 39117
Step 60: 39117 + 663 = 39780
Step 61: 39780 + 663 = 40443
Step 62: 40443 + 663 = 41106
Step 63: 41106 + 663 = 41769
Step 64: 41769 + 663 = 42432
Step 65: 42432 + 663 = 43095
Step 66: 43095 + 663 = 43758
Step 67: 43758 + 663 = 44421
Step 68: 44421 + 663 = 45084
Step 69: 45084 + 663 = 45747
Step 70: 45747 + 663 = 46410
Step 71: 46410 + 663 = 47073
Step 72: 47073 + 663 = 47736
Step 73: 47736 + 663 = 48399
Step 74: 48399 + 663 = 49062
Step 75: 49062 + 663 = 49725
Step 76: 49725 + 663 = 50388
Step 77: 50388 + 663 = 51051
Step 78: 51051 + 663 = 51714
Step 79: 51714 + 663 = 52377
Step 80: 52377 + 663 = 53040
Step 81: 53040 + 663 = 53703
Step 82: 53703 + 663 = 54366
Step 83: 54366 + 663 = 55029
Step 84: 55029 + 663 = 55692
Step 85: 55692 + 663 = 56355
Step 86: 56355 + 663 = 57018
Step 87: 57018 + 663 = 57681
Step 88: 57681 + 663 = 58344
Step 89: 58344 + 663 = 59007
Step 90: 59007 + 663 = 59670
Step 91: 59670 + 663 = 60333
Step 92: 60333 + 663 = 60996
Step 93: 60996 + 663 = 61659
Step 94: 61659 + 663 = 62322
Step 95: 62322 + 663 = 62985
Step 96: 62985 + 663 = 63648
Step 97: 63648 + 663 = 64311
Step 98: 64311 + 663 = 64974
Step 99: 64974 + 663 = 65637
Step 100: 65637 + 663 = 66300
Step 101: 66300 + 663 = 66963
Step 102: 66963 + 663 = 67626
Step 103: 67626 + 663 = 68289
Step 104: 68289 + 663 = 68952
Step 105: 68952 + 663 = 69615
Step 106: 69615 + 663 = 70278
Step 107: 70278 + 663 = 70941
Step 108: 70941 + 663 = 71604
Step 109: 71604 + 663 = 72267
Step 110: 72267 + 663 = 72930
Step 111: 72930 + 663 = 73593
Step 112: 73593 + 663 = 74256
Step 113: 74256 + 663 = 74919
Step 114: 74919 + 663 = 75582
Step 115: 75582 + 663 = 76245
Step 116: 76245 + 663 = 76908
Step 117: 76908 + 663 = 77571
Step 118: 77571 + 663 = 78234
Step 119: 78234 + 663 = 78897
Step 120: 78897 + 663 = 79560
Step 121: 79560 + 663 = 80223
Step 122: 80223 + 663 = 80886
Step 123: 80886 + 663 = 81549
Step 124: 81549 + 663 = 82212
Step 125: 82212 + 663 = 82875
Step 126: 82875 + 663 = 83538
Step 127: 83538 + 663 = 84201
Step 128: 84201 + 663 = 84864
Step 129: 84864 + 663 = 85527
Step 130: 85527 + 663 = 86190
Step 131: 86190 + 663 = 86853
Step 132: 86853 + 663 = 87516
Step 133: 87516 + 663 = 88179
Step 134: 88179 + 663 = 88842
Step 135: 88842 + 663 = 89505
Step 136: 89505 + 663 = 90168
Step 137: 90168 + 663 = 90831
Step 138: 90831 + 663 = 91494
Step 139: 91494 + 663 = 92157
Step 140: 92157 + 663 = 92820
Step 141: 92820 + 663 = 93483
Step 142: 93483 + 663 = 94146
Step 143: 94146 + 663 = 94809
Step 144: 94809 + 663 = 95472
Step 145: 95472 + 663 = 96135
Step 146: 96135 + 663 = 96798
Step 147: 96798 + 663 = 97461
Step 148: 97461 + 663 = 98124
Step 149: 98124 + 663 = 98787
Step 150: 98787 + 663 = 99450
Step 151: 99450 + 663 = 100113
Step 152: 100113 + 663 = 100776
Step 153: 100776 + 663 = 101439
Step 154: 101439 + 663 = 102102
Step 155: 102102 + 663 = 102765
Step 156: 102765 + 663 = 103428
Step 157: 103428 + 663 = 104091
Step 158: 104091 + 663 = 104754
Step 159: 104754 + 663 = 105417
Step 160: 105417 + 663 = 106080
Step 161: 106080 + 663 = 106743
Step 162: 106743 + 663 = 107406
Step 163: 107406 + 663 = 108069
Step 164: 108069 + 663 = 108732
Step 165: 108732 + 663 = 109395
Step 166: 109395 + 663 = 110058
Step 167: 110058 + 663 = 110721
Step 168: 110721 + 663 = 111384
Step 169: 111384 + 663 = 112047
Step 170: 112047 + 663 = 112710
Step 171: 112710 + 663 = 113373
Step 172: 113373 + 663 = 114036
Step 173: 114036 + 663 = 114699
Step 174: 114699 + 663 = 115362
Step 175: 115362 + 663 = 116025
Step 176: 116025 + 663 = 116688
Step 177: 116688 + 663 = 117351
Step 178: 117351 + 663 = 118014
Step 179: 118014 + 663 = 118677
Step 180: 118677 + 663 = 119340
Step 181: 119340 + 663 = 120003
Step 182: 120003 + 663 = 120666
Step 183: 120666 + 663 = 121329
Step 184: 121329 + 663 = 121992
Step 185: 121992 + 663 = 122655
Step 186: 122655 + 663 = 123318
Step 187: 123318 + 663 = 123981
Step 188: 123981 + 663 = 124644
Step 189: 124644 + 663 = 125307
Step 190: 125307 + 663 = 125970
Step 191: 125970 + 663 = 126633
Step 192: 126633 + 663 = 127296
Step 193: 127296 + 663 = 127959
Step 194: 127959 + 663 = 128622
Step 195: 128622 + 663 = 129285
Step 196: 129285 + 663 = 129948
Step 197: 129948 + 663 = 130611
Step 198: 130611 + 663 = 131274
Step 199: 131274 + 663 = 131937
Step 200: 131937 + 663 = 132600
Step 201: 132600 + 663 = 133263
Step 202: 133263 + 663 = 133926
Step 203: 133926 + 663 = 134589
Step 204: 134589 + 663 = 135252
Step 205: 135252 + 663 = 135915
Step 206: 135915 + 663 = 136578
Step 207: 136578 + 663 = 137241
Step 208: 137241 + 663 = 137904
Step 209: 137904 + 663 = 138567
Step 210: 138567 + 663 = 139230
Step 211: 139230 + 663 = 139893
Step 212: 139893 + 663 = 140556
Step 213: 140556 + 663 = 141219
Step 214: 141219 + 663 = 141882
Step 215: 141882 + 663 = 142545
Step 216: 142545 + 663 = 143208
Step 217: 143208 + 663 = 143871
Step 218: 143871 + 663 = 144534
Step 219: 144534 + 663 = 145197
Step 220: 145197 + 663 = 145860
Step 221: 145860 + 663 = 146523
Step 222: 146523 + 663 = 147186
Step 223: 147186 + 663 = 147849
Step 224: 147849 + 663 = 148512
Step 225: 148512 + 663 = 149175

So, 663*225 = 149175