Alright, let's solve this math problem step by step. First, we have the number 513. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 321. So, we're going to take the number 513 and add it to itself 321 times.
Step 1: 0 + 513 = 513
Step 2: 513 + 513 = 1026
Step 3: 1026 + 513 = 1539
Step 4: 1539 + 513 = 2052
Step 5: 2052 + 513 = 2565
Step 6: 2565 + 513 = 3078
Step 7: 3078 + 513 = 3591
Step 8: 3591 + 513 = 4104
Step 9: 4104 + 513 = 4617
Step 10: 4617 + 513 = 5130
Step 11: 5130 + 513 = 5643
Step 12: 5643 + 513 = 6156
Step 13: 6156 + 513 = 6669
Step 14: 6669 + 513 = 7182
Step 15: 7182 + 513 = 7695
Step 16: 7695 + 513 = 8208
Step 17: 8208 + 513 = 8721
Step 18: 8721 + 513 = 9234
Step 19: 9234 + 513 = 9747
Step 20: 9747 + 513 = 10260
Step 21: 10260 + 513 = 10773
Step 22: 10773 + 513 = 11286
Step 23: 11286 + 513 = 11799
Step 24: 11799 + 513 = 12312
Step 25: 12312 + 513 = 12825
Step 26: 12825 + 513 = 13338
Step 27: 13338 + 513 = 13851
Step 28: 13851 + 513 = 14364
Step 29: 14364 + 513 = 14877
Step 30: 14877 + 513 = 15390
Step 31: 15390 + 513 = 15903
Step 32: 15903 + 513 = 16416
Step 33: 16416 + 513 = 16929
Step 34: 16929 + 513 = 17442
Step 35: 17442 + 513 = 17955
Step 36: 17955 + 513 = 18468
Step 37: 18468 + 513 = 18981
Step 38: 18981 + 513 = 19494
Step 39: 19494 + 513 = 20007
Step 40: 20007 + 513 = 20520
Step 41: 20520 + 513 = 21033
Step 42: 21033 + 513 = 21546
Step 43: 21546 + 513 = 22059
Step 44: 22059 + 513 = 22572
Step 45: 22572 + 513 = 23085
Step 46: 23085 + 513 = 23598
Step 47: 23598 + 513 = 24111
Step 48: 24111 + 513 = 24624
Step 49: 24624 + 513 = 25137
Step 50: 25137 + 513 = 25650
Step 51: 25650 + 513 = 26163
Step 52: 26163 + 513 = 26676
Step 53: 26676 + 513 = 27189
Step 54: 27189 + 513 = 27702
Step 55: 27702 + 513 = 28215
Step 56: 28215 + 513 = 28728
Step 57: 28728 + 513 = 29241
Step 58: 29241 + 513 = 29754
Step 59: 29754 + 513 = 30267
Step 60: 30267 + 513 = 30780
Step 61: 30780 + 513 = 31293
Step 62: 31293 + 513 = 31806
Step 63: 31806 + 513 = 32319
Step 64: 32319 + 513 = 32832
Step 65: 32832 + 513 = 33345
Step 66: 33345 + 513 = 33858
Step 67: 33858 + 513 = 34371
Step 68: 34371 + 513 = 34884
Step 69: 34884 + 513 = 35397
Step 70: 35397 + 513 = 35910
Step 71: 35910 + 513 = 36423
Step 72: 36423 + 513 = 36936
Step 73: 36936 + 513 = 37449
Step 74: 37449 + 513 = 37962
Step 75: 37962 + 513 = 38475
Step 76: 38475 + 513 = 38988
Step 77: 38988 + 513 = 39501
Step 78: 39501 + 513 = 40014
Step 79: 40014 + 513 = 40527
Step 80: 40527 + 513 = 41040
Step 81: 41040 + 513 = 41553
Step 82: 41553 + 513 = 42066
Step 83: 42066 + 513 = 42579
Step 84: 42579 + 513 = 43092
Step 85: 43092 + 513 = 43605
Step 86: 43605 + 513 = 44118
Step 87: 44118 + 513 = 44631
Step 88: 44631 + 513 = 45144
Step 89: 45144 + 513 = 45657
Step 90: 45657 + 513 = 46170
Step 91: 46170 + 513 = 46683
Step 92: 46683 + 513 = 47196
Step 93: 47196 + 513 = 47709
Step 94: 47709 + 513 = 48222
Step 95: 48222 + 513 = 48735
Step 96: 48735 + 513 = 49248
Step 97: 49248 + 513 = 49761
Step 98: 49761 + 513 = 50274
Step 99: 50274 + 513 = 50787
Step 100: 50787 + 513 = 51300
Step 101: 51300 + 513 = 51813
Step 102: 51813 + 513 = 52326
Step 103: 52326 + 513 = 52839
Step 104: 52839 + 513 = 53352
Step 105: 53352 + 513 = 53865
Step 106: 53865 + 513 = 54378
Step 107: 54378 + 513 = 54891
Step 108: 54891 + 513 = 55404
Step 109: 55404 + 513 = 55917
Step 110: 55917 + 513 = 56430
Step 111: 56430 + 513 = 56943
Step 112: 56943 + 513 = 57456
Step 113: 57456 + 513 = 57969
Step 114: 57969 + 513 = 58482
Step 115: 58482 + 513 = 58995
Step 116: 58995 + 513 = 59508
Step 117: 59508 + 513 = 60021
Step 118: 60021 + 513 = 60534
Step 119: 60534 + 513 = 61047
Step 120: 61047 + 513 = 61560
Step 121: 61560 + 513 = 62073
Step 122: 62073 + 513 = 62586
Step 123: 62586 + 513 = 63099
Step 124: 63099 + 513 = 63612
Step 125: 63612 + 513 = 64125
Step 126: 64125 + 513 = 64638
Step 127: 64638 + 513 = 65151
Step 128: 65151 + 513 = 65664
Step 129: 65664 + 513 = 66177
Step 130: 66177 + 513 = 66690
Step 131: 66690 + 513 = 67203
Step 132: 67203 + 513 = 67716
Step 133: 67716 + 513 = 68229
Step 134: 68229 + 513 = 68742
Step 135: 68742 + 513 = 69255
Step 136: 69255 + 513 = 69768
Step 137: 69768 + 513 = 70281
Step 138: 70281 + 513 = 70794
Step 139: 70794 + 513 = 71307
Step 140: 71307 + 513 = 71820
Step 141: 71820 + 513 = 72333
Step 142: 72333 + 513 = 72846
Step 143: 72846 + 513 = 73359
Step 144: 73359 + 513 = 73872
Step 145: 73872 + 513 = 74385
Step 146: 74385 + 513 = 74898
Step 147: 74898 + 513 = 75411
Step 148: 75411 + 513 = 75924
Step 149: 75924 + 513 = 76437
Step 150: 76437 + 513 = 76950
Step 151: 76950 + 513 = 77463
Step 152: 77463 + 513 = 77976
Step 153: 77976 + 513 = 78489
Step 154: 78489 + 513 = 79002
Step 155: 79002 + 513 = 79515
Step 156: 79515 + 513 = 80028
Step 157: 80028 + 513 = 80541
Step 158: 80541 + 513 = 81054
Step 159: 81054 + 513 = 81567
Step 160: 81567 + 513 = 82080
Step 161: 82080 + 513 = 82593
Step 162: 82593 + 513 = 83106
Step 163: 83106 + 513 = 83619
Step 164: 83619 + 513 = 84132
Step 165: 84132 + 513 = 84645
Step 166: 84645 + 513 = 85158
Step 167: 85158 + 513 = 85671
Step 168: 85671 + 513 = 86184
Step 169: 86184 + 513 = 86697
Step 170: 86697 + 513 = 87210
Step 171: 87210 + 513 = 87723
Step 172: 87723 + 513 = 88236
Step 173: 88236 + 513 = 88749
Step 174: 88749 + 513 = 89262
Step 175: 89262 + 513 = 89775
Step 176: 89775 + 513 = 90288
Step 177: 90288 + 513 = 90801
Step 178: 90801 + 513 = 91314
Step 179: 91314 + 513 = 91827
Step 180: 91827 + 513 = 92340
Step 181: 92340 + 513 = 92853
Step 182: 92853 + 513 = 93366
Step 183: 93366 + 513 = 93879
Step 184: 93879 + 513 = 94392
Step 185: 94392 + 513 = 94905
Step 186: 94905 + 513 = 95418
Step 187: 95418 + 513 = 95931
Step 188: 95931 + 513 = 96444
Step 189: 96444 + 513 = 96957
Step 190: 96957 + 513 = 97470
Step 191: 97470 + 513 = 97983
Step 192: 97983 + 513 = 98496
Step 193: 98496 + 513 = 99009
Step 194: 99009 + 513 = 99522
Step 195: 99522 + 513 = 100035
Step 196: 100035 + 513 = 100548
Step 197: 100548 + 513 = 101061
Step 198: 101061 + 513 = 101574
Step 199: 101574 + 513 = 102087
Step 200: 102087 + 513 = 102600
Step 201: 102600 + 513 = 103113
Step 202: 103113 + 513 = 103626
Step 203: 103626 + 513 = 104139
Step 204: 104139 + 513 = 104652
Step 205: 104652 + 513 = 105165
Step 206: 105165 + 513 = 105678
Step 207: 105678 + 513 = 106191
Step 208: 106191 + 513 = 106704
Step 209: 106704 + 513 = 107217
Step 210: 107217 + 513 = 107730
Step 211: 107730 + 513 = 108243
Step 212: 108243 + 513 = 108756
Step 213: 108756 + 513 = 109269
Step 214: 109269 + 513 = 109782
Step 215: 109782 + 513 = 110295
Step 216: 110295 + 513 = 110808
Step 217: 110808 + 513 = 111321
Step 218: 111321 + 513 = 111834
Step 219: 111834 + 513 = 112347
Step 220: 112347 + 513 = 112860
Step 221: 112860 + 513 = 113373
Step 222: 113373 + 513 = 113886
Step 223: 113886 + 513 = 114399
Step 224: 114399 + 513 = 114912
Step 225: 114912 + 513 = 115425
Step 226: 115425 + 513 = 115938
Step 227: 115938 + 513 = 116451
Step 228: 116451 + 513 = 116964
Step 229: 116964 + 513 = 117477
Step 230: 117477 + 513 = 117990
Step 231: 117990 + 513 = 118503
Step 232: 118503 + 513 = 119016
Step 233: 119016 + 513 = 119529
Step 234: 119529 + 513 = 120042
Step 235: 120042 + 513 = 120555
Step 236: 120555 + 513 = 121068
Step 237: 121068 + 513 = 121581
Step 238: 121581 + 513 = 122094
Step 239: 122094 + 513 = 122607
Step 240: 122607 + 513 = 123120
Step 241: 123120 + 513 = 123633
Step 242: 123633 + 513 = 124146
Step 243: 124146 + 513 = 124659
Step 244: 124659 + 513 = 125172
Step 245: 125172 + 513 = 125685
Step 246: 125685 + 513 = 126198
Step 247: 126198 + 513 = 126711
Step 248: 126711 + 513 = 127224
Step 249: 127224 + 513 = 127737
Step 250: 127737 + 513 = 128250
Step 251: 128250 + 513 = 128763
Step 252: 128763 + 513 = 129276
Step 253: 129276 + 513 = 129789
Step 254: 129789 + 513 = 130302
Step 255: 130302 + 513 = 130815
Step 256: 130815 + 513 = 131328
Step 257: 131328 + 513 = 131841
Step 258: 131841 + 513 = 132354
Step 259: 132354 + 513 = 132867
Step 260: 132867 + 513 = 133380
Step 261: 133380 + 513 = 133893
Step 262: 133893 + 513 = 134406
Step 263: 134406 + 513 = 134919
Step 264: 134919 + 513 = 135432
Step 265: 135432 + 513 = 135945
Step 266: 135945 + 513 = 136458
Step 267: 136458 + 513 = 136971
Step 268: 136971 + 513 = 137484
Step 269: 137484 + 513 = 137997
Step 270: 137997 + 513 = 138510
Step 271: 138510 + 513 = 139023
Step 272: 139023 + 513 = 139536
Step 273: 139536 + 513 = 140049
Step 274: 140049 + 513 = 140562
Step 275: 140562 + 513 = 141075
Step 276: 141075 + 513 = 141588
Step 277: 141588 + 513 = 142101
Step 278: 142101 + 513 = 142614
Step 279: 142614 + 513 = 143127
Step 280: 143127 + 513 = 143640
Step 281: 143640 + 513 = 144153
Step 282: 144153 + 513 = 144666
Step 283: 144666 + 513 = 145179
Step 284: 145179 + 513 = 145692
Step 285: 145692 + 513 = 146205
Step 286: 146205 + 513 = 146718
Step 287: 146718 + 513 = 147231
Step 288: 147231 + 513 = 147744
Step 289: 147744 + 513 = 148257
Step 290: 148257 + 513 = 148770
Step 291: 148770 + 513 = 149283
Step 292: 149283 + 513 = 149796
Step 293: 149796 + 513 = 150309
Step 294: 150309 + 513 = 150822
Step 295: 150822 + 513 = 151335
Step 296: 151335 + 513 = 151848
Step 297: 151848 + 513 = 152361
Step 298: 152361 + 513 = 152874
Step 299: 152874 + 513 = 153387
Step 300: 153387 + 513 = 153900
Step 301: 153900 + 513 = 154413
Step 302: 154413 + 513 = 154926
Step 303: 154926 + 513 = 155439
Step 304: 155439 + 513 = 155952
Step 305: 155952 + 513 = 156465
Step 306: 156465 + 513 = 156978
Step 307: 156978 + 513 = 157491
Step 308: 157491 + 513 = 158004
Step 309: 158004 + 513 = 158517
Step 310: 158517 + 513 = 159030
Step 311: 159030 + 513 = 159543
Step 312: 159543 + 513 = 160056
Step 313: 160056 + 513 = 160569
Step 314: 160569 + 513 = 161082
Step 315: 161082 + 513 = 161595
Step 316: 161595 + 513 = 162108
Step 317: 162108 + 513 = 162621
Step 318: 162621 + 513 = 163134
Step 319: 163134 + 513 = 163647
Step 320: 163647 + 513 = 164160
Step 321: 164160 + 513 = 164673

So, 513*321 = 164673