Alright, let's solve this math problem step by step. First, we have the number 339. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 237. So, we're going to take the number 339 and add it to itself 237 times.
Step 1: 0 + 339 = 339
Step 2: 339 + 339 = 678
Step 3: 678 + 339 = 1017
Step 4: 1017 + 339 = 1356
Step 5: 1356 + 339 = 1695
Step 6: 1695 + 339 = 2034
Step 7: 2034 + 339 = 2373
Step 8: 2373 + 339 = 2712
Step 9: 2712 + 339 = 3051
Step 10: 3051 + 339 = 3390
Step 11: 3390 + 339 = 3729
Step 12: 3729 + 339 = 4068
Step 13: 4068 + 339 = 4407
Step 14: 4407 + 339 = 4746
Step 15: 4746 + 339 = 5085
Step 16: 5085 + 339 = 5424
Step 17: 5424 + 339 = 5763
Step 18: 5763 + 339 = 6102
Step 19: 6102 + 339 = 6441
Step 20: 6441 + 339 = 6780
Step 21: 6780 + 339 = 7119
Step 22: 7119 + 339 = 7458
Step 23: 7458 + 339 = 7797
Step 24: 7797 + 339 = 8136
Step 25: 8136 + 339 = 8475
Step 26: 8475 + 339 = 8814
Step 27: 8814 + 339 = 9153
Step 28: 9153 + 339 = 9492
Step 29: 9492 + 339 = 9831
Step 30: 9831 + 339 = 10170
Step 31: 10170 + 339 = 10509
Step 32: 10509 + 339 = 10848
Step 33: 10848 + 339 = 11187
Step 34: 11187 + 339 = 11526
Step 35: 11526 + 339 = 11865
Step 36: 11865 + 339 = 12204
Step 37: 12204 + 339 = 12543
Step 38: 12543 + 339 = 12882
Step 39: 12882 + 339 = 13221
Step 40: 13221 + 339 = 13560
Step 41: 13560 + 339 = 13899
Step 42: 13899 + 339 = 14238
Step 43: 14238 + 339 = 14577
Step 44: 14577 + 339 = 14916
Step 45: 14916 + 339 = 15255
Step 46: 15255 + 339 = 15594
Step 47: 15594 + 339 = 15933
Step 48: 15933 + 339 = 16272
Step 49: 16272 + 339 = 16611
Step 50: 16611 + 339 = 16950
Step 51: 16950 + 339 = 17289
Step 52: 17289 + 339 = 17628
Step 53: 17628 + 339 = 17967
Step 54: 17967 + 339 = 18306
Step 55: 18306 + 339 = 18645
Step 56: 18645 + 339 = 18984
Step 57: 18984 + 339 = 19323
Step 58: 19323 + 339 = 19662
Step 59: 19662 + 339 = 20001
Step 60: 20001 + 339 = 20340
Step 61: 20340 + 339 = 20679
Step 62: 20679 + 339 = 21018
Step 63: 21018 + 339 = 21357
Step 64: 21357 + 339 = 21696
Step 65: 21696 + 339 = 22035
Step 66: 22035 + 339 = 22374
Step 67: 22374 + 339 = 22713
Step 68: 22713 + 339 = 23052
Step 69: 23052 + 339 = 23391
Step 70: 23391 + 339 = 23730
Step 71: 23730 + 339 = 24069
Step 72: 24069 + 339 = 24408
Step 73: 24408 + 339 = 24747
Step 74: 24747 + 339 = 25086
Step 75: 25086 + 339 = 25425
Step 76: 25425 + 339 = 25764
Step 77: 25764 + 339 = 26103
Step 78: 26103 + 339 = 26442
Step 79: 26442 + 339 = 26781
Step 80: 26781 + 339 = 27120
Step 81: 27120 + 339 = 27459
Step 82: 27459 + 339 = 27798
Step 83: 27798 + 339 = 28137
Step 84: 28137 + 339 = 28476
Step 85: 28476 + 339 = 28815
Step 86: 28815 + 339 = 29154
Step 87: 29154 + 339 = 29493
Step 88: 29493 + 339 = 29832
Step 89: 29832 + 339 = 30171
Step 90: 30171 + 339 = 30510
Step 91: 30510 + 339 = 30849
Step 92: 30849 + 339 = 31188
Step 93: 31188 + 339 = 31527
Step 94: 31527 + 339 = 31866
Step 95: 31866 + 339 = 32205
Step 96: 32205 + 339 = 32544
Step 97: 32544 + 339 = 32883
Step 98: 32883 + 339 = 33222
Step 99: 33222 + 339 = 33561
Step 100: 33561 + 339 = 33900
Step 101: 33900 + 339 = 34239
Step 102: 34239 + 339 = 34578
Step 103: 34578 + 339 = 34917
Step 104: 34917 + 339 = 35256
Step 105: 35256 + 339 = 35595
Step 106: 35595 + 339 = 35934
Step 107: 35934 + 339 = 36273
Step 108: 36273 + 339 = 36612
Step 109: 36612 + 339 = 36951
Step 110: 36951 + 339 = 37290
Step 111: 37290 + 339 = 37629
Step 112: 37629 + 339 = 37968
Step 113: 37968 + 339 = 38307
Step 114: 38307 + 339 = 38646
Step 115: 38646 + 339 = 38985
Step 116: 38985 + 339 = 39324
Step 117: 39324 + 339 = 39663
Step 118: 39663 + 339 = 40002
Step 119: 40002 + 339 = 40341
Step 120: 40341 + 339 = 40680
Step 121: 40680 + 339 = 41019
Step 122: 41019 + 339 = 41358
Step 123: 41358 + 339 = 41697
Step 124: 41697 + 339 = 42036
Step 125: 42036 + 339 = 42375
Step 126: 42375 + 339 = 42714
Step 127: 42714 + 339 = 43053
Step 128: 43053 + 339 = 43392
Step 129: 43392 + 339 = 43731
Step 130: 43731 + 339 = 44070
Step 131: 44070 + 339 = 44409
Step 132: 44409 + 339 = 44748
Step 133: 44748 + 339 = 45087
Step 134: 45087 + 339 = 45426
Step 135: 45426 + 339 = 45765
Step 136: 45765 + 339 = 46104
Step 137: 46104 + 339 = 46443
Step 138: 46443 + 339 = 46782
Step 139: 46782 + 339 = 47121
Step 140: 47121 + 339 = 47460
Step 141: 47460 + 339 = 47799
Step 142: 47799 + 339 = 48138
Step 143: 48138 + 339 = 48477
Step 144: 48477 + 339 = 48816
Step 145: 48816 + 339 = 49155
Step 146: 49155 + 339 = 49494
Step 147: 49494 + 339 = 49833
Step 148: 49833 + 339 = 50172
Step 149: 50172 + 339 = 50511
Step 150: 50511 + 339 = 50850
Step 151: 50850 + 339 = 51189
Step 152: 51189 + 339 = 51528
Step 153: 51528 + 339 = 51867
Step 154: 51867 + 339 = 52206
Step 155: 52206 + 339 = 52545
Step 156: 52545 + 339 = 52884
Step 157: 52884 + 339 = 53223
Step 158: 53223 + 339 = 53562
Step 159: 53562 + 339 = 53901
Step 160: 53901 + 339 = 54240
Step 161: 54240 + 339 = 54579
Step 162: 54579 + 339 = 54918
Step 163: 54918 + 339 = 55257
Step 164: 55257 + 339 = 55596
Step 165: 55596 + 339 = 55935
Step 166: 55935 + 339 = 56274
Step 167: 56274 + 339 = 56613
Step 168: 56613 + 339 = 56952
Step 169: 56952 + 339 = 57291
Step 170: 57291 + 339 = 57630
Step 171: 57630 + 339 = 57969
Step 172: 57969 + 339 = 58308
Step 173: 58308 + 339 = 58647
Step 174: 58647 + 339 = 58986
Step 175: 58986 + 339 = 59325
Step 176: 59325 + 339 = 59664
Step 177: 59664 + 339 = 60003
Step 178: 60003 + 339 = 60342
Step 179: 60342 + 339 = 60681
Step 180: 60681 + 339 = 61020
Step 181: 61020 + 339 = 61359
Step 182: 61359 + 339 = 61698
Step 183: 61698 + 339 = 62037
Step 184: 62037 + 339 = 62376
Step 185: 62376 + 339 = 62715
Step 186: 62715 + 339 = 63054
Step 187: 63054 + 339 = 63393
Step 188: 63393 + 339 = 63732
Step 189: 63732 + 339 = 64071
Step 190: 64071 + 339 = 64410
Step 191: 64410 + 339 = 64749
Step 192: 64749 + 339 = 65088
Step 193: 65088 + 339 = 65427
Step 194: 65427 + 339 = 65766
Step 195: 65766 + 339 = 66105
Step 196: 66105 + 339 = 66444
Step 197: 66444 + 339 = 66783
Step 198: 66783 + 339 = 67122
Step 199: 67122 + 339 = 67461
Step 200: 67461 + 339 = 67800
Step 201: 67800 + 339 = 68139
Step 202: 68139 + 339 = 68478
Step 203: 68478 + 339 = 68817
Step 204: 68817 + 339 = 69156
Step 205: 69156 + 339 = 69495
Step 206: 69495 + 339 = 69834
Step 207: 69834 + 339 = 70173
Step 208: 70173 + 339 = 70512
Step 209: 70512 + 339 = 70851
Step 210: 70851 + 339 = 71190
Step 211: 71190 + 339 = 71529
Step 212: 71529 + 339 = 71868
Step 213: 71868 + 339 = 72207
Step 214: 72207 + 339 = 72546
Step 215: 72546 + 339 = 72885
Step 216: 72885 + 339 = 73224
Step 217: 73224 + 339 = 73563
Step 218: 73563 + 339 = 73902
Step 219: 73902 + 339 = 74241
Step 220: 74241 + 339 = 74580
Step 221: 74580 + 339 = 74919
Step 222: 74919 + 339 = 75258
Step 223: 75258 + 339 = 75597
Step 224: 75597 + 339 = 75936
Step 225: 75936 + 339 = 76275
Step 226: 76275 + 339 = 76614
Step 227: 76614 + 339 = 76953
Step 228: 76953 + 339 = 77292
Step 229: 77292 + 339 = 77631
Step 230: 77631 + 339 = 77970
Step 231: 77970 + 339 = 78309
Step 232: 78309 + 339 = 78648
Step 233: 78648 + 339 = 78987
Step 234: 78987 + 339 = 79326
Step 235: 79326 + 339 = 79665
Step 236: 79665 + 339 = 80004
Step 237: 80004 + 339 = 80343

So, 339*237 = 80343