Alright, let's solve this math problem step by step. First, we have the number 309. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 431. So, we're going to take the number 309 and add it to itself 431 times.
Step 1: 0 + 309 = 309
Step 2: 309 + 309 = 618
Step 3: 618 + 309 = 927
Step 4: 927 + 309 = 1236
Step 5: 1236 + 309 = 1545
Step 6: 1545 + 309 = 1854
Step 7: 1854 + 309 = 2163
Step 8: 2163 + 309 = 2472
Step 9: 2472 + 309 = 2781
Step 10: 2781 + 309 = 3090
Step 11: 3090 + 309 = 3399
Step 12: 3399 + 309 = 3708
Step 13: 3708 + 309 = 4017
Step 14: 4017 + 309 = 4326
Step 15: 4326 + 309 = 4635
Step 16: 4635 + 309 = 4944
Step 17: 4944 + 309 = 5253
Step 18: 5253 + 309 = 5562
Step 19: 5562 + 309 = 5871
Step 20: 5871 + 309 = 6180
Step 21: 6180 + 309 = 6489
Step 22: 6489 + 309 = 6798
Step 23: 6798 + 309 = 7107
Step 24: 7107 + 309 = 7416
Step 25: 7416 + 309 = 7725
Step 26: 7725 + 309 = 8034
Step 27: 8034 + 309 = 8343
Step 28: 8343 + 309 = 8652
Step 29: 8652 + 309 = 8961
Step 30: 8961 + 309 = 9270
Step 31: 9270 + 309 = 9579
Step 32: 9579 + 309 = 9888
Step 33: 9888 + 309 = 10197
Step 34: 10197 + 309 = 10506
Step 35: 10506 + 309 = 10815
Step 36: 10815 + 309 = 11124
Step 37: 11124 + 309 = 11433
Step 38: 11433 + 309 = 11742
Step 39: 11742 + 309 = 12051
Step 40: 12051 + 309 = 12360
Step 41: 12360 + 309 = 12669
Step 42: 12669 + 309 = 12978
Step 43: 12978 + 309 = 13287
Step 44: 13287 + 309 = 13596
Step 45: 13596 + 309 = 13905
Step 46: 13905 + 309 = 14214
Step 47: 14214 + 309 = 14523
Step 48: 14523 + 309 = 14832
Step 49: 14832 + 309 = 15141
Step 50: 15141 + 309 = 15450
Step 51: 15450 + 309 = 15759
Step 52: 15759 + 309 = 16068
Step 53: 16068 + 309 = 16377
Step 54: 16377 + 309 = 16686
Step 55: 16686 + 309 = 16995
Step 56: 16995 + 309 = 17304
Step 57: 17304 + 309 = 17613
Step 58: 17613 + 309 = 17922
Step 59: 17922 + 309 = 18231
Step 60: 18231 + 309 = 18540
Step 61: 18540 + 309 = 18849
Step 62: 18849 + 309 = 19158
Step 63: 19158 + 309 = 19467
Step 64: 19467 + 309 = 19776
Step 65: 19776 + 309 = 20085
Step 66: 20085 + 309 = 20394
Step 67: 20394 + 309 = 20703
Step 68: 20703 + 309 = 21012
Step 69: 21012 + 309 = 21321
Step 70: 21321 + 309 = 21630
Step 71: 21630 + 309 = 21939
Step 72: 21939 + 309 = 22248
Step 73: 22248 + 309 = 22557
Step 74: 22557 + 309 = 22866
Step 75: 22866 + 309 = 23175
Step 76: 23175 + 309 = 23484
Step 77: 23484 + 309 = 23793
Step 78: 23793 + 309 = 24102
Step 79: 24102 + 309 = 24411
Step 80: 24411 + 309 = 24720
Step 81: 24720 + 309 = 25029
Step 82: 25029 + 309 = 25338
Step 83: 25338 + 309 = 25647
Step 84: 25647 + 309 = 25956
Step 85: 25956 + 309 = 26265
Step 86: 26265 + 309 = 26574
Step 87: 26574 + 309 = 26883
Step 88: 26883 + 309 = 27192
Step 89: 27192 + 309 = 27501
Step 90: 27501 + 309 = 27810
Step 91: 27810 + 309 = 28119
Step 92: 28119 + 309 = 28428
Step 93: 28428 + 309 = 28737
Step 94: 28737 + 309 = 29046
Step 95: 29046 + 309 = 29355
Step 96: 29355 + 309 = 29664
Step 97: 29664 + 309 = 29973
Step 98: 29973 + 309 = 30282
Step 99: 30282 + 309 = 30591
Step 100: 30591 + 309 = 30900
Step 101: 30900 + 309 = 31209
Step 102: 31209 + 309 = 31518
Step 103: 31518 + 309 = 31827
Step 104: 31827 + 309 = 32136
Step 105: 32136 + 309 = 32445
Step 106: 32445 + 309 = 32754
Step 107: 32754 + 309 = 33063
Step 108: 33063 + 309 = 33372
Step 109: 33372 + 309 = 33681
Step 110: 33681 + 309 = 33990
Step 111: 33990 + 309 = 34299
Step 112: 34299 + 309 = 34608
Step 113: 34608 + 309 = 34917
Step 114: 34917 + 309 = 35226
Step 115: 35226 + 309 = 35535
Step 116: 35535 + 309 = 35844
Step 117: 35844 + 309 = 36153
Step 118: 36153 + 309 = 36462
Step 119: 36462 + 309 = 36771
Step 120: 36771 + 309 = 37080
Step 121: 37080 + 309 = 37389
Step 122: 37389 + 309 = 37698
Step 123: 37698 + 309 = 38007
Step 124: 38007 + 309 = 38316
Step 125: 38316 + 309 = 38625
Step 126: 38625 + 309 = 38934
Step 127: 38934 + 309 = 39243
Step 128: 39243 + 309 = 39552
Step 129: 39552 + 309 = 39861
Step 130: 39861 + 309 = 40170
Step 131: 40170 + 309 = 40479
Step 132: 40479 + 309 = 40788
Step 133: 40788 + 309 = 41097
Step 134: 41097 + 309 = 41406
Step 135: 41406 + 309 = 41715
Step 136: 41715 + 309 = 42024
Step 137: 42024 + 309 = 42333
Step 138: 42333 + 309 = 42642
Step 139: 42642 + 309 = 42951
Step 140: 42951 + 309 = 43260
Step 141: 43260 + 309 = 43569
Step 142: 43569 + 309 = 43878
Step 143: 43878 + 309 = 44187
Step 144: 44187 + 309 = 44496
Step 145: 44496 + 309 = 44805
Step 146: 44805 + 309 = 45114
Step 147: 45114 + 309 = 45423
Step 148: 45423 + 309 = 45732
Step 149: 45732 + 309 = 46041
Step 150: 46041 + 309 = 46350
Step 151: 46350 + 309 = 46659
Step 152: 46659 + 309 = 46968
Step 153: 46968 + 309 = 47277
Step 154: 47277 + 309 = 47586
Step 155: 47586 + 309 = 47895
Step 156: 47895 + 309 = 48204
Step 157: 48204 + 309 = 48513
Step 158: 48513 + 309 = 48822
Step 159: 48822 + 309 = 49131
Step 160: 49131 + 309 = 49440
Step 161: 49440 + 309 = 49749
Step 162: 49749 + 309 = 50058
Step 163: 50058 + 309 = 50367
Step 164: 50367 + 309 = 50676
Step 165: 50676 + 309 = 50985
Step 166: 50985 + 309 = 51294
Step 167: 51294 + 309 = 51603
Step 168: 51603 + 309 = 51912
Step 169: 51912 + 309 = 52221
Step 170: 52221 + 309 = 52530
Step 171: 52530 + 309 = 52839
Step 172: 52839 + 309 = 53148
Step 173: 53148 + 309 = 53457
Step 174: 53457 + 309 = 53766
Step 175: 53766 + 309 = 54075
Step 176: 54075 + 309 = 54384
Step 177: 54384 + 309 = 54693
Step 178: 54693 + 309 = 55002
Step 179: 55002 + 309 = 55311
Step 180: 55311 + 309 = 55620
Step 181: 55620 + 309 = 55929
Step 182: 55929 + 309 = 56238
Step 183: 56238 + 309 = 56547
Step 184: 56547 + 309 = 56856
Step 185: 56856 + 309 = 57165
Step 186: 57165 + 309 = 57474
Step 187: 57474 + 309 = 57783
Step 188: 57783 + 309 = 58092
Step 189: 58092 + 309 = 58401
Step 190: 58401 + 309 = 58710
Step 191: 58710 + 309 = 59019
Step 192: 59019 + 309 = 59328
Step 193: 59328 + 309 = 59637
Step 194: 59637 + 309 = 59946
Step 195: 59946 + 309 = 60255
Step 196: 60255 + 309 = 60564
Step 197: 60564 + 309 = 60873
Step 198: 60873 + 309 = 61182
Step 199: 61182 + 309 = 61491
Step 200: 61491 + 309 = 61800
Step 201: 61800 + 309 = 62109
Step 202: 62109 + 309 = 62418
Step 203: 62418 + 309 = 62727
Step 204: 62727 + 309 = 63036
Step 205: 63036 + 309 = 63345
Step 206: 63345 + 309 = 63654
Step 207: 63654 + 309 = 63963
Step 208: 63963 + 309 = 64272
Step 209: 64272 + 309 = 64581
Step 210: 64581 + 309 = 64890
Step 211: 64890 + 309 = 65199
Step 212: 65199 + 309 = 65508
Step 213: 65508 + 309 = 65817
Step 214: 65817 + 309 = 66126
Step 215: 66126 + 309 = 66435
Step 216: 66435 + 309 = 66744
Step 217: 66744 + 309 = 67053
Step 218: 67053 + 309 = 67362
Step 219: 67362 + 309 = 67671
Step 220: 67671 + 309 = 67980
Step 221: 67980 + 309 = 68289
Step 222: 68289 + 309 = 68598
Step 223: 68598 + 309 = 68907
Step 224: 68907 + 309 = 69216
Step 225: 69216 + 309 = 69525
Step 226: 69525 + 309 = 69834
Step 227: 69834 + 309 = 70143
Step 228: 70143 + 309 = 70452
Step 229: 70452 + 309 = 70761
Step 230: 70761 + 309 = 71070
Step 231: 71070 + 309 = 71379
Step 232: 71379 + 309 = 71688
Step 233: 71688 + 309 = 71997
Step 234: 71997 + 309 = 72306
Step 235: 72306 + 309 = 72615
Step 236: 72615 + 309 = 72924
Step 237: 72924 + 309 = 73233
Step 238: 73233 + 309 = 73542
Step 239: 73542 + 309 = 73851
Step 240: 73851 + 309 = 74160
Step 241: 74160 + 309 = 74469
Step 242: 74469 + 309 = 74778
Step 243: 74778 + 309 = 75087
Step 244: 75087 + 309 = 75396
Step 245: 75396 + 309 = 75705
Step 246: 75705 + 309 = 76014
Step 247: 76014 + 309 = 76323
Step 248: 76323 + 309 = 76632
Step 249: 76632 + 309 = 76941
Step 250: 76941 + 309 = 77250
Step 251: 77250 + 309 = 77559
Step 252: 77559 + 309 = 77868
Step 253: 77868 + 309 = 78177
Step 254: 78177 + 309 = 78486
Step 255: 78486 + 309 = 78795
Step 256: 78795 + 309 = 79104
Step 257: 79104 + 309 = 79413
Step 258: 79413 + 309 = 79722
Step 259: 79722 + 309 = 80031
Step 260: 80031 + 309 = 80340
Step 261: 80340 + 309 = 80649
Step 262: 80649 + 309 = 80958
Step 263: 80958 + 309 = 81267
Step 264: 81267 + 309 = 81576
Step 265: 81576 + 309 = 81885
Step 266: 81885 + 309 = 82194
Step 267: 82194 + 309 = 82503
Step 268: 82503 + 309 = 82812
Step 269: 82812 + 309 = 83121
Step 270: 83121 + 309 = 83430
Step 271: 83430 + 309 = 83739
Step 272: 83739 + 309 = 84048
Step 273: 84048 + 309 = 84357
Step 274: 84357 + 309 = 84666
Step 275: 84666 + 309 = 84975
Step 276: 84975 + 309 = 85284
Step 277: 85284 + 309 = 85593
Step 278: 85593 + 309 = 85902
Step 279: 85902 + 309 = 86211
Step 280: 86211 + 309 = 86520
Step 281: 86520 + 309 = 86829
Step 282: 86829 + 309 = 87138
Step 283: 87138 + 309 = 87447
Step 284: 87447 + 309 = 87756
Step 285: 87756 + 309 = 88065
Step 286: 88065 + 309 = 88374
Step 287: 88374 + 309 = 88683
Step 288: 88683 + 309 = 88992
Step 289: 88992 + 309 = 89301
Step 290: 89301 + 309 = 89610
Step 291: 89610 + 309 = 89919
Step 292: 89919 + 309 = 90228
Step 293: 90228 + 309 = 90537
Step 294: 90537 + 309 = 90846
Step 295: 90846 + 309 = 91155
Step 296: 91155 + 309 = 91464
Step 297: 91464 + 309 = 91773
Step 298: 91773 + 309 = 92082
Step 299: 92082 + 309 = 92391
Step 300: 92391 + 309 = 92700
Step 301: 92700 + 309 = 93009
Step 302: 93009 + 309 = 93318
Step 303: 93318 + 309 = 93627
Step 304: 93627 + 309 = 93936
Step 305: 93936 + 309 = 94245
Step 306: 94245 + 309 = 94554
Step 307: 94554 + 309 = 94863
Step 308: 94863 + 309 = 95172
Step 309: 95172 + 309 = 95481
Step 310: 95481 + 309 = 95790
Step 311: 95790 + 309 = 96099
Step 312: 96099 + 309 = 96408
Step 313: 96408 + 309 = 96717
Step 314: 96717 + 309 = 97026
Step 315: 97026 + 309 = 97335
Step 316: 97335 + 309 = 97644
Step 317: 97644 + 309 = 97953
Step 318: 97953 + 309 = 98262
Step 319: 98262 + 309 = 98571
Step 320: 98571 + 309 = 98880
Step 321: 98880 + 309 = 99189
Step 322: 99189 + 309 = 99498
Step 323: 99498 + 309 = 99807
Step 324: 99807 + 309 = 100116
Step 325: 100116 + 309 = 100425
Step 326: 100425 + 309 = 100734
Step 327: 100734 + 309 = 101043
Step 328: 101043 + 309 = 101352
Step 329: 101352 + 309 = 101661
Step 330: 101661 + 309 = 101970
Step 331: 101970 + 309 = 102279
Step 332: 102279 + 309 = 102588
Step 333: 102588 + 309 = 102897
Step 334: 102897 + 309 = 103206
Step 335: 103206 + 309 = 103515
Step 336: 103515 + 309 = 103824
Step 337: 103824 + 309 = 104133
Step 338: 104133 + 309 = 104442
Step 339: 104442 + 309 = 104751
Step 340: 104751 + 309 = 105060
Step 341: 105060 + 309 = 105369
Step 342: 105369 + 309 = 105678
Step 343: 105678 + 309 = 105987
Step 344: 105987 + 309 = 106296
Step 345: 106296 + 309 = 106605
Step 346: 106605 + 309 = 106914
Step 347: 106914 + 309 = 107223
Step 348: 107223 + 309 = 107532
Step 349: 107532 + 309 = 107841
Step 350: 107841 + 309 = 108150
Step 351: 108150 + 309 = 108459
Step 352: 108459 + 309 = 108768
Step 353: 108768 + 309 = 109077
Step 354: 109077 + 309 = 109386
Step 355: 109386 + 309 = 109695
Step 356: 109695 + 309 = 110004
Step 357: 110004 + 309 = 110313
Step 358: 110313 + 309 = 110622
Step 359: 110622 + 309 = 110931
Step 360: 110931 + 309 = 111240
Step 361: 111240 + 309 = 111549
Step 362: 111549 + 309 = 111858
Step 363: 111858 + 309 = 112167
Step 364: 112167 + 309 = 112476
Step 365: 112476 + 309 = 112785
Step 366: 112785 + 309 = 113094
Step 367: 113094 + 309 = 113403
Step 368: 113403 + 309 = 113712
Step 369: 113712 + 309 = 114021
Step 370: 114021 + 309 = 114330
Step 371: 114330 + 309 = 114639
Step 372: 114639 + 309 = 114948
Step 373: 114948 + 309 = 115257
Step 374: 115257 + 309 = 115566
Step 375: 115566 + 309 = 115875
Step 376: 115875 + 309 = 116184
Step 377: 116184 + 309 = 116493
Step 378: 116493 + 309 = 116802
Step 379: 116802 + 309 = 117111
Step 380: 117111 + 309 = 117420
Step 381: 117420 + 309 = 117729
Step 382: 117729 + 309 = 118038
Step 383: 118038 + 309 = 118347
Step 384: 118347 + 309 = 118656
Step 385: 118656 + 309 = 118965
Step 386: 118965 + 309 = 119274
Step 387: 119274 + 309 = 119583
Step 388: 119583 + 309 = 119892
Step 389: 119892 + 309 = 120201
Step 390: 120201 + 309 = 120510
Step 391: 120510 + 309 = 120819
Step 392: 120819 + 309 = 121128
Step 393: 121128 + 309 = 121437
Step 394: 121437 + 309 = 121746
Step 395: 121746 + 309 = 122055
Step 396: 122055 + 309 = 122364
Step 397: 122364 + 309 = 122673
Step 398: 122673 + 309 = 122982
Step 399: 122982 + 309 = 123291
Step 400: 123291 + 309 = 123600
Step 401: 123600 + 309 = 123909
Step 402: 123909 + 309 = 124218
Step 403: 124218 + 309 = 124527
Step 404: 124527 + 309 = 124836
Step 405: 124836 + 309 = 125145
Step 406: 125145 + 309 = 125454
Step 407: 125454 + 309 = 125763
Step 408: 125763 + 309 = 126072
Step 409: 126072 + 309 = 126381
Step 410: 126381 + 309 = 126690
Step 411: 126690 + 309 = 126999
Step 412: 126999 + 309 = 127308
Step 413: 127308 + 309 = 127617
Step 414: 127617 + 309 = 127926
Step 415: 127926 + 309 = 128235
Step 416: 128235 + 309 = 128544
Step 417: 128544 + 309 = 128853
Step 418: 128853 + 309 = 129162
Step 419: 129162 + 309 = 129471
Step 420: 129471 + 309 = 129780
Step 421: 129780 + 309 = 130089
Step 422: 130089 + 309 = 130398
Step 423: 130398 + 309 = 130707
Step 424: 130707 + 309 = 131016
Step 425: 131016 + 309 = 131325
Step 426: 131325 + 309 = 131634
Step 427: 131634 + 309 = 131943
Step 428: 131943 + 309 = 132252
Step 429: 132252 + 309 = 132561
Step 430: 132561 + 309 = 132870
Step 431: 132870 + 309 = 133179

So, 309*431 = 133179