Alright, let's solve this math problem step by step. First, we have the number 86. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 353. So, we're going to take the number 86 and add it to itself 353 times.
Step 1: 0 + 86 = 86
Step 2: 86 + 86 = 172
Step 3: 172 + 86 = 258
Step 4: 258 + 86 = 344
Step 5: 344 + 86 = 430
Step 6: 430 + 86 = 516
Step 7: 516 + 86 = 602
Step 8: 602 + 86 = 688
Step 9: 688 + 86 = 774
Step 10: 774 + 86 = 860
Step 11: 860 + 86 = 946
Step 12: 946 + 86 = 1032
Step 13: 1032 + 86 = 1118
Step 14: 1118 + 86 = 1204
Step 15: 1204 + 86 = 1290
Step 16: 1290 + 86 = 1376
Step 17: 1376 + 86 = 1462
Step 18: 1462 + 86 = 1548
Step 19: 1548 + 86 = 1634
Step 20: 1634 + 86 = 1720
Step 21: 1720 + 86 = 1806
Step 22: 1806 + 86 = 1892
Step 23: 1892 + 86 = 1978
Step 24: 1978 + 86 = 2064
Step 25: 2064 + 86 = 2150
Step 26: 2150 + 86 = 2236
Step 27: 2236 + 86 = 2322
Step 28: 2322 + 86 = 2408
Step 29: 2408 + 86 = 2494
Step 30: 2494 + 86 = 2580
Step 31: 2580 + 86 = 2666
Step 32: 2666 + 86 = 2752
Step 33: 2752 + 86 = 2838
Step 34: 2838 + 86 = 2924
Step 35: 2924 + 86 = 3010
Step 36: 3010 + 86 = 3096
Step 37: 3096 + 86 = 3182
Step 38: 3182 + 86 = 3268
Step 39: 3268 + 86 = 3354
Step 40: 3354 + 86 = 3440
Step 41: 3440 + 86 = 3526
Step 42: 3526 + 86 = 3612
Step 43: 3612 + 86 = 3698
Step 44: 3698 + 86 = 3784
Step 45: 3784 + 86 = 3870
Step 46: 3870 + 86 = 3956
Step 47: 3956 + 86 = 4042
Step 48: 4042 + 86 = 4128
Step 49: 4128 + 86 = 4214
Step 50: 4214 + 86 = 4300
Step 51: 4300 + 86 = 4386
Step 52: 4386 + 86 = 4472
Step 53: 4472 + 86 = 4558
Step 54: 4558 + 86 = 4644
Step 55: 4644 + 86 = 4730
Step 56: 4730 + 86 = 4816
Step 57: 4816 + 86 = 4902
Step 58: 4902 + 86 = 4988
Step 59: 4988 + 86 = 5074
Step 60: 5074 + 86 = 5160
Step 61: 5160 + 86 = 5246
Step 62: 5246 + 86 = 5332
Step 63: 5332 + 86 = 5418
Step 64: 5418 + 86 = 5504
Step 65: 5504 + 86 = 5590
Step 66: 5590 + 86 = 5676
Step 67: 5676 + 86 = 5762
Step 68: 5762 + 86 = 5848
Step 69: 5848 + 86 = 5934
Step 70: 5934 + 86 = 6020
Step 71: 6020 + 86 = 6106
Step 72: 6106 + 86 = 6192
Step 73: 6192 + 86 = 6278
Step 74: 6278 + 86 = 6364
Step 75: 6364 + 86 = 6450
Step 76: 6450 + 86 = 6536
Step 77: 6536 + 86 = 6622
Step 78: 6622 + 86 = 6708
Step 79: 6708 + 86 = 6794
Step 80: 6794 + 86 = 6880
Step 81: 6880 + 86 = 6966
Step 82: 6966 + 86 = 7052
Step 83: 7052 + 86 = 7138
Step 84: 7138 + 86 = 7224
Step 85: 7224 + 86 = 7310
Step 86: 7310 + 86 = 7396
Step 87: 7396 + 86 = 7482
Step 88: 7482 + 86 = 7568
Step 89: 7568 + 86 = 7654
Step 90: 7654 + 86 = 7740
Step 91: 7740 + 86 = 7826
Step 92: 7826 + 86 = 7912
Step 93: 7912 + 86 = 7998
Step 94: 7998 + 86 = 8084
Step 95: 8084 + 86 = 8170
Step 96: 8170 + 86 = 8256
Step 97: 8256 + 86 = 8342
Step 98: 8342 + 86 = 8428
Step 99: 8428 + 86 = 8514
Step 100: 8514 + 86 = 8600
Step 101: 8600 + 86 = 8686
Step 102: 8686 + 86 = 8772
Step 103: 8772 + 86 = 8858
Step 104: 8858 + 86 = 8944
Step 105: 8944 + 86 = 9030
Step 106: 9030 + 86 = 9116
Step 107: 9116 + 86 = 9202
Step 108: 9202 + 86 = 9288
Step 109: 9288 + 86 = 9374
Step 110: 9374 + 86 = 9460
Step 111: 9460 + 86 = 9546
Step 112: 9546 + 86 = 9632
Step 113: 9632 + 86 = 9718
Step 114: 9718 + 86 = 9804
Step 115: 9804 + 86 = 9890
Step 116: 9890 + 86 = 9976
Step 117: 9976 + 86 = 10062
Step 118: 10062 + 86 = 10148
Step 119: 10148 + 86 = 10234
Step 120: 10234 + 86 = 10320
Step 121: 10320 + 86 = 10406
Step 122: 10406 + 86 = 10492
Step 123: 10492 + 86 = 10578
Step 124: 10578 + 86 = 10664
Step 125: 10664 + 86 = 10750
Step 126: 10750 + 86 = 10836
Step 127: 10836 + 86 = 10922
Step 128: 10922 + 86 = 11008
Step 129: 11008 + 86 = 11094
Step 130: 11094 + 86 = 11180
Step 131: 11180 + 86 = 11266
Step 132: 11266 + 86 = 11352
Step 133: 11352 + 86 = 11438
Step 134: 11438 + 86 = 11524
Step 135: 11524 + 86 = 11610
Step 136: 11610 + 86 = 11696
Step 137: 11696 + 86 = 11782
Step 138: 11782 + 86 = 11868
Step 139: 11868 + 86 = 11954
Step 140: 11954 + 86 = 12040
Step 141: 12040 + 86 = 12126
Step 142: 12126 + 86 = 12212
Step 143: 12212 + 86 = 12298
Step 144: 12298 + 86 = 12384
Step 145: 12384 + 86 = 12470
Step 146: 12470 + 86 = 12556
Step 147: 12556 + 86 = 12642
Step 148: 12642 + 86 = 12728
Step 149: 12728 + 86 = 12814
Step 150: 12814 + 86 = 12900
Step 151: 12900 + 86 = 12986
Step 152: 12986 + 86 = 13072
Step 153: 13072 + 86 = 13158
Step 154: 13158 + 86 = 13244
Step 155: 13244 + 86 = 13330
Step 156: 13330 + 86 = 13416
Step 157: 13416 + 86 = 13502
Step 158: 13502 + 86 = 13588
Step 159: 13588 + 86 = 13674
Step 160: 13674 + 86 = 13760
Step 161: 13760 + 86 = 13846
Step 162: 13846 + 86 = 13932
Step 163: 13932 + 86 = 14018
Step 164: 14018 + 86 = 14104
Step 165: 14104 + 86 = 14190
Step 166: 14190 + 86 = 14276
Step 167: 14276 + 86 = 14362
Step 168: 14362 + 86 = 14448
Step 169: 14448 + 86 = 14534
Step 170: 14534 + 86 = 14620
Step 171: 14620 + 86 = 14706
Step 172: 14706 + 86 = 14792
Step 173: 14792 + 86 = 14878
Step 174: 14878 + 86 = 14964
Step 175: 14964 + 86 = 15050
Step 176: 15050 + 86 = 15136
Step 177: 15136 + 86 = 15222
Step 178: 15222 + 86 = 15308
Step 179: 15308 + 86 = 15394
Step 180: 15394 + 86 = 15480
Step 181: 15480 + 86 = 15566
Step 182: 15566 + 86 = 15652
Step 183: 15652 + 86 = 15738
Step 184: 15738 + 86 = 15824
Step 185: 15824 + 86 = 15910
Step 186: 15910 + 86 = 15996
Step 187: 15996 + 86 = 16082
Step 188: 16082 + 86 = 16168
Step 189: 16168 + 86 = 16254
Step 190: 16254 + 86 = 16340
Step 191: 16340 + 86 = 16426
Step 192: 16426 + 86 = 16512
Step 193: 16512 + 86 = 16598
Step 194: 16598 + 86 = 16684
Step 195: 16684 + 86 = 16770
Step 196: 16770 + 86 = 16856
Step 197: 16856 + 86 = 16942
Step 198: 16942 + 86 = 17028
Step 199: 17028 + 86 = 17114
Step 200: 17114 + 86 = 17200
Step 201: 17200 + 86 = 17286
Step 202: 17286 + 86 = 17372
Step 203: 17372 + 86 = 17458
Step 204: 17458 + 86 = 17544
Step 205: 17544 + 86 = 17630
Step 206: 17630 + 86 = 17716
Step 207: 17716 + 86 = 17802
Step 208: 17802 + 86 = 17888
Step 209: 17888 + 86 = 17974
Step 210: 17974 + 86 = 18060
Step 211: 18060 + 86 = 18146
Step 212: 18146 + 86 = 18232
Step 213: 18232 + 86 = 18318
Step 214: 18318 + 86 = 18404
Step 215: 18404 + 86 = 18490
Step 216: 18490 + 86 = 18576
Step 217: 18576 + 86 = 18662
Step 218: 18662 + 86 = 18748
Step 219: 18748 + 86 = 18834
Step 220: 18834 + 86 = 18920
Step 221: 18920 + 86 = 19006
Step 222: 19006 + 86 = 19092
Step 223: 19092 + 86 = 19178
Step 224: 19178 + 86 = 19264
Step 225: 19264 + 86 = 19350
Step 226: 19350 + 86 = 19436
Step 227: 19436 + 86 = 19522
Step 228: 19522 + 86 = 19608
Step 229: 19608 + 86 = 19694
Step 230: 19694 + 86 = 19780
Step 231: 19780 + 86 = 19866
Step 232: 19866 + 86 = 19952
Step 233: 19952 + 86 = 20038
Step 234: 20038 + 86 = 20124
Step 235: 20124 + 86 = 20210
Step 236: 20210 + 86 = 20296
Step 237: 20296 + 86 = 20382
Step 238: 20382 + 86 = 20468
Step 239: 20468 + 86 = 20554
Step 240: 20554 + 86 = 20640
Step 241: 20640 + 86 = 20726
Step 242: 20726 + 86 = 20812
Step 243: 20812 + 86 = 20898
Step 244: 20898 + 86 = 20984
Step 245: 20984 + 86 = 21070
Step 246: 21070 + 86 = 21156
Step 247: 21156 + 86 = 21242
Step 248: 21242 + 86 = 21328
Step 249: 21328 + 86 = 21414
Step 250: 21414 + 86 = 21500
Step 251: 21500 + 86 = 21586
Step 252: 21586 + 86 = 21672
Step 253: 21672 + 86 = 21758
Step 254: 21758 + 86 = 21844
Step 255: 21844 + 86 = 21930
Step 256: 21930 + 86 = 22016
Step 257: 22016 + 86 = 22102
Step 258: 22102 + 86 = 22188
Step 259: 22188 + 86 = 22274
Step 260: 22274 + 86 = 22360
Step 261: 22360 + 86 = 22446
Step 262: 22446 + 86 = 22532
Step 263: 22532 + 86 = 22618
Step 264: 22618 + 86 = 22704
Step 265: 22704 + 86 = 22790
Step 266: 22790 + 86 = 22876
Step 267: 22876 + 86 = 22962
Step 268: 22962 + 86 = 23048
Step 269: 23048 + 86 = 23134
Step 270: 23134 + 86 = 23220
Step 271: 23220 + 86 = 23306
Step 272: 23306 + 86 = 23392
Step 273: 23392 + 86 = 23478
Step 274: 23478 + 86 = 23564
Step 275: 23564 + 86 = 23650
Step 276: 23650 + 86 = 23736
Step 277: 23736 + 86 = 23822
Step 278: 23822 + 86 = 23908
Step 279: 23908 + 86 = 23994
Step 280: 23994 + 86 = 24080
Step 281: 24080 + 86 = 24166
Step 282: 24166 + 86 = 24252
Step 283: 24252 + 86 = 24338
Step 284: 24338 + 86 = 24424
Step 285: 24424 + 86 = 24510
Step 286: 24510 + 86 = 24596
Step 287: 24596 + 86 = 24682
Step 288: 24682 + 86 = 24768
Step 289: 24768 + 86 = 24854
Step 290: 24854 + 86 = 24940
Step 291: 24940 + 86 = 25026
Step 292: 25026 + 86 = 25112
Step 293: 25112 + 86 = 25198
Step 294: 25198 + 86 = 25284
Step 295: 25284 + 86 = 25370
Step 296: 25370 + 86 = 25456
Step 297: 25456 + 86 = 25542
Step 298: 25542 + 86 = 25628
Step 299: 25628 + 86 = 25714
Step 300: 25714 + 86 = 25800
Step 301: 25800 + 86 = 25886
Step 302: 25886 + 86 = 25972
Step 303: 25972 + 86 = 26058
Step 304: 26058 + 86 = 26144
Step 305: 26144 + 86 = 26230
Step 306: 26230 + 86 = 26316
Step 307: 26316 + 86 = 26402
Step 308: 26402 + 86 = 26488
Step 309: 26488 + 86 = 26574
Step 310: 26574 + 86 = 26660
Step 311: 26660 + 86 = 26746
Step 312: 26746 + 86 = 26832
Step 313: 26832 + 86 = 26918
Step 314: 26918 + 86 = 27004
Step 315: 27004 + 86 = 27090
Step 316: 27090 + 86 = 27176
Step 317: 27176 + 86 = 27262
Step 318: 27262 + 86 = 27348
Step 319: 27348 + 86 = 27434
Step 320: 27434 + 86 = 27520
Step 321: 27520 + 86 = 27606
Step 322: 27606 + 86 = 27692
Step 323: 27692 + 86 = 27778
Step 324: 27778 + 86 = 27864
Step 325: 27864 + 86 = 27950
Step 326: 27950 + 86 = 28036
Step 327: 28036 + 86 = 28122
Step 328: 28122 + 86 = 28208
Step 329: 28208 + 86 = 28294
Step 330: 28294 + 86 = 28380
Step 331: 28380 + 86 = 28466
Step 332: 28466 + 86 = 28552
Step 333: 28552 + 86 = 28638
Step 334: 28638 + 86 = 28724
Step 335: 28724 + 86 = 28810
Step 336: 28810 + 86 = 28896
Step 337: 28896 + 86 = 28982
Step 338: 28982 + 86 = 29068
Step 339: 29068 + 86 = 29154
Step 340: 29154 + 86 = 29240
Step 341: 29240 + 86 = 29326
Step 342: 29326 + 86 = 29412
Step 343: 29412 + 86 = 29498
Step 344: 29498 + 86 = 29584
Step 345: 29584 + 86 = 29670
Step 346: 29670 + 86 = 29756
Step 347: 29756 + 86 = 29842
Step 348: 29842 + 86 = 29928
Step 349: 29928 + 86 = 30014
Step 350: 30014 + 86 = 30100
Step 351: 30100 + 86 = 30186
Step 352: 30186 + 86 = 30272
Step 353: 30272 + 86 = 30358

So, 86*353 = 30358