Alright, let's solve this math problem step by step. First, we have the number 346. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 391. So, we're going to take the number 346 and add it to itself 391 times.
Step 1: 0 + 346 = 346
Step 2: 346 + 346 = 692
Step 3: 692 + 346 = 1038
Step 4: 1038 + 346 = 1384
Step 5: 1384 + 346 = 1730
Step 6: 1730 + 346 = 2076
Step 7: 2076 + 346 = 2422
Step 8: 2422 + 346 = 2768
Step 9: 2768 + 346 = 3114
Step 10: 3114 + 346 = 3460
Step 11: 3460 + 346 = 3806
Step 12: 3806 + 346 = 4152
Step 13: 4152 + 346 = 4498
Step 14: 4498 + 346 = 4844
Step 15: 4844 + 346 = 5190
Step 16: 5190 + 346 = 5536
Step 17: 5536 + 346 = 5882
Step 18: 5882 + 346 = 6228
Step 19: 6228 + 346 = 6574
Step 20: 6574 + 346 = 6920
Step 21: 6920 + 346 = 7266
Step 22: 7266 + 346 = 7612
Step 23: 7612 + 346 = 7958
Step 24: 7958 + 346 = 8304
Step 25: 8304 + 346 = 8650
Step 26: 8650 + 346 = 8996
Step 27: 8996 + 346 = 9342
Step 28: 9342 + 346 = 9688
Step 29: 9688 + 346 = 10034
Step 30: 10034 + 346 = 10380
Step 31: 10380 + 346 = 10726
Step 32: 10726 + 346 = 11072
Step 33: 11072 + 346 = 11418
Step 34: 11418 + 346 = 11764
Step 35: 11764 + 346 = 12110
Step 36: 12110 + 346 = 12456
Step 37: 12456 + 346 = 12802
Step 38: 12802 + 346 = 13148
Step 39: 13148 + 346 = 13494
Step 40: 13494 + 346 = 13840
Step 41: 13840 + 346 = 14186
Step 42: 14186 + 346 = 14532
Step 43: 14532 + 346 = 14878
Step 44: 14878 + 346 = 15224
Step 45: 15224 + 346 = 15570
Step 46: 15570 + 346 = 15916
Step 47: 15916 + 346 = 16262
Step 48: 16262 + 346 = 16608
Step 49: 16608 + 346 = 16954
Step 50: 16954 + 346 = 17300
Step 51: 17300 + 346 = 17646
Step 52: 17646 + 346 = 17992
Step 53: 17992 + 346 = 18338
Step 54: 18338 + 346 = 18684
Step 55: 18684 + 346 = 19030
Step 56: 19030 + 346 = 19376
Step 57: 19376 + 346 = 19722
Step 58: 19722 + 346 = 20068
Step 59: 20068 + 346 = 20414
Step 60: 20414 + 346 = 20760
Step 61: 20760 + 346 = 21106
Step 62: 21106 + 346 = 21452
Step 63: 21452 + 346 = 21798
Step 64: 21798 + 346 = 22144
Step 65: 22144 + 346 = 22490
Step 66: 22490 + 346 = 22836
Step 67: 22836 + 346 = 23182
Step 68: 23182 + 346 = 23528
Step 69: 23528 + 346 = 23874
Step 70: 23874 + 346 = 24220
Step 71: 24220 + 346 = 24566
Step 72: 24566 + 346 = 24912
Step 73: 24912 + 346 = 25258
Step 74: 25258 + 346 = 25604
Step 75: 25604 + 346 = 25950
Step 76: 25950 + 346 = 26296
Step 77: 26296 + 346 = 26642
Step 78: 26642 + 346 = 26988
Step 79: 26988 + 346 = 27334
Step 80: 27334 + 346 = 27680
Step 81: 27680 + 346 = 28026
Step 82: 28026 + 346 = 28372
Step 83: 28372 + 346 = 28718
Step 84: 28718 + 346 = 29064
Step 85: 29064 + 346 = 29410
Step 86: 29410 + 346 = 29756
Step 87: 29756 + 346 = 30102
Step 88: 30102 + 346 = 30448
Step 89: 30448 + 346 = 30794
Step 90: 30794 + 346 = 31140
Step 91: 31140 + 346 = 31486
Step 92: 31486 + 346 = 31832
Step 93: 31832 + 346 = 32178
Step 94: 32178 + 346 = 32524
Step 95: 32524 + 346 = 32870
Step 96: 32870 + 346 = 33216
Step 97: 33216 + 346 = 33562
Step 98: 33562 + 346 = 33908
Step 99: 33908 + 346 = 34254
Step 100: 34254 + 346 = 34600
Step 101: 34600 + 346 = 34946
Step 102: 34946 + 346 = 35292
Step 103: 35292 + 346 = 35638
Step 104: 35638 + 346 = 35984
Step 105: 35984 + 346 = 36330
Step 106: 36330 + 346 = 36676
Step 107: 36676 + 346 = 37022
Step 108: 37022 + 346 = 37368
Step 109: 37368 + 346 = 37714
Step 110: 37714 + 346 = 38060
Step 111: 38060 + 346 = 38406
Step 112: 38406 + 346 = 38752
Step 113: 38752 + 346 = 39098
Step 114: 39098 + 346 = 39444
Step 115: 39444 + 346 = 39790
Step 116: 39790 + 346 = 40136
Step 117: 40136 + 346 = 40482
Step 118: 40482 + 346 = 40828
Step 119: 40828 + 346 = 41174
Step 120: 41174 + 346 = 41520
Step 121: 41520 + 346 = 41866
Step 122: 41866 + 346 = 42212
Step 123: 42212 + 346 = 42558
Step 124: 42558 + 346 = 42904
Step 125: 42904 + 346 = 43250
Step 126: 43250 + 346 = 43596
Step 127: 43596 + 346 = 43942
Step 128: 43942 + 346 = 44288
Step 129: 44288 + 346 = 44634
Step 130: 44634 + 346 = 44980
Step 131: 44980 + 346 = 45326
Step 132: 45326 + 346 = 45672
Step 133: 45672 + 346 = 46018
Step 134: 46018 + 346 = 46364
Step 135: 46364 + 346 = 46710
Step 136: 46710 + 346 = 47056
Step 137: 47056 + 346 = 47402
Step 138: 47402 + 346 = 47748
Step 139: 47748 + 346 = 48094
Step 140: 48094 + 346 = 48440
Step 141: 48440 + 346 = 48786
Step 142: 48786 + 346 = 49132
Step 143: 49132 + 346 = 49478
Step 144: 49478 + 346 = 49824
Step 145: 49824 + 346 = 50170
Step 146: 50170 + 346 = 50516
Step 147: 50516 + 346 = 50862
Step 148: 50862 + 346 = 51208
Step 149: 51208 + 346 = 51554
Step 150: 51554 + 346 = 51900
Step 151: 51900 + 346 = 52246
Step 152: 52246 + 346 = 52592
Step 153: 52592 + 346 = 52938
Step 154: 52938 + 346 = 53284
Step 155: 53284 + 346 = 53630
Step 156: 53630 + 346 = 53976
Step 157: 53976 + 346 = 54322
Step 158: 54322 + 346 = 54668
Step 159: 54668 + 346 = 55014
Step 160: 55014 + 346 = 55360
Step 161: 55360 + 346 = 55706
Step 162: 55706 + 346 = 56052
Step 163: 56052 + 346 = 56398
Step 164: 56398 + 346 = 56744
Step 165: 56744 + 346 = 57090
Step 166: 57090 + 346 = 57436
Step 167: 57436 + 346 = 57782
Step 168: 57782 + 346 = 58128
Step 169: 58128 + 346 = 58474
Step 170: 58474 + 346 = 58820
Step 171: 58820 + 346 = 59166
Step 172: 59166 + 346 = 59512
Step 173: 59512 + 346 = 59858
Step 174: 59858 + 346 = 60204
Step 175: 60204 + 346 = 60550
Step 176: 60550 + 346 = 60896
Step 177: 60896 + 346 = 61242
Step 178: 61242 + 346 = 61588
Step 179: 61588 + 346 = 61934
Step 180: 61934 + 346 = 62280
Step 181: 62280 + 346 = 62626
Step 182: 62626 + 346 = 62972
Step 183: 62972 + 346 = 63318
Step 184: 63318 + 346 = 63664
Step 185: 63664 + 346 = 64010
Step 186: 64010 + 346 = 64356
Step 187: 64356 + 346 = 64702
Step 188: 64702 + 346 = 65048
Step 189: 65048 + 346 = 65394
Step 190: 65394 + 346 = 65740
Step 191: 65740 + 346 = 66086
Step 192: 66086 + 346 = 66432
Step 193: 66432 + 346 = 66778
Step 194: 66778 + 346 = 67124
Step 195: 67124 + 346 = 67470
Step 196: 67470 + 346 = 67816
Step 197: 67816 + 346 = 68162
Step 198: 68162 + 346 = 68508
Step 199: 68508 + 346 = 68854
Step 200: 68854 + 346 = 69200
Step 201: 69200 + 346 = 69546
Step 202: 69546 + 346 = 69892
Step 203: 69892 + 346 = 70238
Step 204: 70238 + 346 = 70584
Step 205: 70584 + 346 = 70930
Step 206: 70930 + 346 = 71276
Step 207: 71276 + 346 = 71622
Step 208: 71622 + 346 = 71968
Step 209: 71968 + 346 = 72314
Step 210: 72314 + 346 = 72660
Step 211: 72660 + 346 = 73006
Step 212: 73006 + 346 = 73352
Step 213: 73352 + 346 = 73698
Step 214: 73698 + 346 = 74044
Step 215: 74044 + 346 = 74390
Step 216: 74390 + 346 = 74736
Step 217: 74736 + 346 = 75082
Step 218: 75082 + 346 = 75428
Step 219: 75428 + 346 = 75774
Step 220: 75774 + 346 = 76120
Step 221: 76120 + 346 = 76466
Step 222: 76466 + 346 = 76812
Step 223: 76812 + 346 = 77158
Step 224: 77158 + 346 = 77504
Step 225: 77504 + 346 = 77850
Step 226: 77850 + 346 = 78196
Step 227: 78196 + 346 = 78542
Step 228: 78542 + 346 = 78888
Step 229: 78888 + 346 = 79234
Step 230: 79234 + 346 = 79580
Step 231: 79580 + 346 = 79926
Step 232: 79926 + 346 = 80272
Step 233: 80272 + 346 = 80618
Step 234: 80618 + 346 = 80964
Step 235: 80964 + 346 = 81310
Step 236: 81310 + 346 = 81656
Step 237: 81656 + 346 = 82002
Step 238: 82002 + 346 = 82348
Step 239: 82348 + 346 = 82694
Step 240: 82694 + 346 = 83040
Step 241: 83040 + 346 = 83386
Step 242: 83386 + 346 = 83732
Step 243: 83732 + 346 = 84078
Step 244: 84078 + 346 = 84424
Step 245: 84424 + 346 = 84770
Step 246: 84770 + 346 = 85116
Step 247: 85116 + 346 = 85462
Step 248: 85462 + 346 = 85808
Step 249: 85808 + 346 = 86154
Step 250: 86154 + 346 = 86500
Step 251: 86500 + 346 = 86846
Step 252: 86846 + 346 = 87192
Step 253: 87192 + 346 = 87538
Step 254: 87538 + 346 = 87884
Step 255: 87884 + 346 = 88230
Step 256: 88230 + 346 = 88576
Step 257: 88576 + 346 = 88922
Step 258: 88922 + 346 = 89268
Step 259: 89268 + 346 = 89614
Step 260: 89614 + 346 = 89960
Step 261: 89960 + 346 = 90306
Step 262: 90306 + 346 = 90652
Step 263: 90652 + 346 = 90998
Step 264: 90998 + 346 = 91344
Step 265: 91344 + 346 = 91690
Step 266: 91690 + 346 = 92036
Step 267: 92036 + 346 = 92382
Step 268: 92382 + 346 = 92728
Step 269: 92728 + 346 = 93074
Step 270: 93074 + 346 = 93420
Step 271: 93420 + 346 = 93766
Step 272: 93766 + 346 = 94112
Step 273: 94112 + 346 = 94458
Step 274: 94458 + 346 = 94804
Step 275: 94804 + 346 = 95150
Step 276: 95150 + 346 = 95496
Step 277: 95496 + 346 = 95842
Step 278: 95842 + 346 = 96188
Step 279: 96188 + 346 = 96534
Step 280: 96534 + 346 = 96880
Step 281: 96880 + 346 = 97226
Step 282: 97226 + 346 = 97572
Step 283: 97572 + 346 = 97918
Step 284: 97918 + 346 = 98264
Step 285: 98264 + 346 = 98610
Step 286: 98610 + 346 = 98956
Step 287: 98956 + 346 = 99302
Step 288: 99302 + 346 = 99648
Step 289: 99648 + 346 = 99994
Step 290: 99994 + 346 = 100340
Step 291: 100340 + 346 = 100686
Step 292: 100686 + 346 = 101032
Step 293: 101032 + 346 = 101378
Step 294: 101378 + 346 = 101724
Step 295: 101724 + 346 = 102070
Step 296: 102070 + 346 = 102416
Step 297: 102416 + 346 = 102762
Step 298: 102762 + 346 = 103108
Step 299: 103108 + 346 = 103454
Step 300: 103454 + 346 = 103800
Step 301: 103800 + 346 = 104146
Step 302: 104146 + 346 = 104492
Step 303: 104492 + 346 = 104838
Step 304: 104838 + 346 = 105184
Step 305: 105184 + 346 = 105530
Step 306: 105530 + 346 = 105876
Step 307: 105876 + 346 = 106222
Step 308: 106222 + 346 = 106568
Step 309: 106568 + 346 = 106914
Step 310: 106914 + 346 = 107260
Step 311: 107260 + 346 = 107606
Step 312: 107606 + 346 = 107952
Step 313: 107952 + 346 = 108298
Step 314: 108298 + 346 = 108644
Step 315: 108644 + 346 = 108990
Step 316: 108990 + 346 = 109336
Step 317: 109336 + 346 = 109682
Step 318: 109682 + 346 = 110028
Step 319: 110028 + 346 = 110374
Step 320: 110374 + 346 = 110720
Step 321: 110720 + 346 = 111066
Step 322: 111066 + 346 = 111412
Step 323: 111412 + 346 = 111758
Step 324: 111758 + 346 = 112104
Step 325: 112104 + 346 = 112450
Step 326: 112450 + 346 = 112796
Step 327: 112796 + 346 = 113142
Step 328: 113142 + 346 = 113488
Step 329: 113488 + 346 = 113834
Step 330: 113834 + 346 = 114180
Step 331: 114180 + 346 = 114526
Step 332: 114526 + 346 = 114872
Step 333: 114872 + 346 = 115218
Step 334: 115218 + 346 = 115564
Step 335: 115564 + 346 = 115910
Step 336: 115910 + 346 = 116256
Step 337: 116256 + 346 = 116602
Step 338: 116602 + 346 = 116948
Step 339: 116948 + 346 = 117294
Step 340: 117294 + 346 = 117640
Step 341: 117640 + 346 = 117986
Step 342: 117986 + 346 = 118332
Step 343: 118332 + 346 = 118678
Step 344: 118678 + 346 = 119024
Step 345: 119024 + 346 = 119370
Step 346: 119370 + 346 = 119716
Step 347: 119716 + 346 = 120062
Step 348: 120062 + 346 = 120408
Step 349: 120408 + 346 = 120754
Step 350: 120754 + 346 = 121100
Step 351: 121100 + 346 = 121446
Step 352: 121446 + 346 = 121792
Step 353: 121792 + 346 = 122138
Step 354: 122138 + 346 = 122484
Step 355: 122484 + 346 = 122830
Step 356: 122830 + 346 = 123176
Step 357: 123176 + 346 = 123522
Step 358: 123522 + 346 = 123868
Step 359: 123868 + 346 = 124214
Step 360: 124214 + 346 = 124560
Step 361: 124560 + 346 = 124906
Step 362: 124906 + 346 = 125252
Step 363: 125252 + 346 = 125598
Step 364: 125598 + 346 = 125944
Step 365: 125944 + 346 = 126290
Step 366: 126290 + 346 = 126636
Step 367: 126636 + 346 = 126982
Step 368: 126982 + 346 = 127328
Step 369: 127328 + 346 = 127674
Step 370: 127674 + 346 = 128020
Step 371: 128020 + 346 = 128366
Step 372: 128366 + 346 = 128712
Step 373: 128712 + 346 = 129058
Step 374: 129058 + 346 = 129404
Step 375: 129404 + 346 = 129750
Step 376: 129750 + 346 = 130096
Step 377: 130096 + 346 = 130442
Step 378: 130442 + 346 = 130788
Step 379: 130788 + 346 = 131134
Step 380: 131134 + 346 = 131480
Step 381: 131480 + 346 = 131826
Step 382: 131826 + 346 = 132172
Step 383: 132172 + 346 = 132518
Step 384: 132518 + 346 = 132864
Step 385: 132864 + 346 = 133210
Step 386: 133210 + 346 = 133556
Step 387: 133556 + 346 = 133902
Step 388: 133902 + 346 = 134248
Step 389: 134248 + 346 = 134594
Step 390: 134594 + 346 = 134940
Step 391: 134940 + 346 = 135286

So, 346*391 = 135286