OK, let's crack this. We're given 539 and our task is to multiply it by 313. Essentially, we'll be adding 539 to itself 313 times.
Step 1: 0 + 539 = 539
Step 2: 539 + 539 = 1078
Step 3: 1078 + 539 = 1617
Step 4: 1617 + 539 = 2156
Step 5: 2156 + 539 = 2695
Step 6: 2695 + 539 = 3234
Step 7: 3234 + 539 = 3773
Step 8: 3773 + 539 = 4312
Step 9: 4312 + 539 = 4851
Step 10: 4851 + 539 = 5390
Step 11: 5390 + 539 = 5929
Step 12: 5929 + 539 = 6468
Step 13: 6468 + 539 = 7007
Step 14: 7007 + 539 = 7546
Step 15: 7546 + 539 = 8085
Step 16: 8085 + 539 = 8624
Step 17: 8624 + 539 = 9163
Step 18: 9163 + 539 = 9702
Step 19: 9702 + 539 = 10241
Step 20: 10241 + 539 = 10780
Step 21: 10780 + 539 = 11319
Step 22: 11319 + 539 = 11858
Step 23: 11858 + 539 = 12397
Step 24: 12397 + 539 = 12936
Step 25: 12936 + 539 = 13475
Step 26: 13475 + 539 = 14014
Step 27: 14014 + 539 = 14553
Step 28: 14553 + 539 = 15092
Step 29: 15092 + 539 = 15631
Step 30: 15631 + 539 = 16170
Step 31: 16170 + 539 = 16709
Step 32: 16709 + 539 = 17248
Step 33: 17248 + 539 = 17787
Step 34: 17787 + 539 = 18326
Step 35: 18326 + 539 = 18865
Step 36: 18865 + 539 = 19404
Step 37: 19404 + 539 = 19943
Step 38: 19943 + 539 = 20482
Step 39: 20482 + 539 = 21021
Step 40: 21021 + 539 = 21560
Step 41: 21560 + 539 = 22099
Step 42: 22099 + 539 = 22638
Step 43: 22638 + 539 = 23177
Step 44: 23177 + 539 = 23716
Step 45: 23716 + 539 = 24255
Step 46: 24255 + 539 = 24794
Step 47: 24794 + 539 = 25333
Step 48: 25333 + 539 = 25872
Step 49: 25872 + 539 = 26411
Step 50: 26411 + 539 = 26950
Step 51: 26950 + 539 = 27489
Step 52: 27489 + 539 = 28028
Step 53: 28028 + 539 = 28567
Step 54: 28567 + 539 = 29106
Step 55: 29106 + 539 = 29645
Step 56: 29645 + 539 = 30184
Step 57: 30184 + 539 = 30723
Step 58: 30723 + 539 = 31262
Step 59: 31262 + 539 = 31801
Step 60: 31801 + 539 = 32340
Step 61: 32340 + 539 = 32879
Step 62: 32879 + 539 = 33418
Step 63: 33418 + 539 = 33957
Step 64: 33957 + 539 = 34496
Step 65: 34496 + 539 = 35035
Step 66: 35035 + 539 = 35574
Step 67: 35574 + 539 = 36113
Step 68: 36113 + 539 = 36652
Step 69: 36652 + 539 = 37191
Step 70: 37191 + 539 = 37730
Step 71: 37730 + 539 = 38269
Step 72: 38269 + 539 = 38808
Step 73: 38808 + 539 = 39347
Step 74: 39347 + 539 = 39886
Step 75: 39886 + 539 = 40425
Step 76: 40425 + 539 = 40964
Step 77: 40964 + 539 = 41503
Step 78: 41503 + 539 = 42042
Step 79: 42042 + 539 = 42581
Step 80: 42581 + 539 = 43120
Step 81: 43120 + 539 = 43659
Step 82: 43659 + 539 = 44198
Step 83: 44198 + 539 = 44737
Step 84: 44737 + 539 = 45276
Step 85: 45276 + 539 = 45815
Step 86: 45815 + 539 = 46354
Step 87: 46354 + 539 = 46893
Step 88: 46893 + 539 = 47432
Step 89: 47432 + 539 = 47971
Step 90: 47971 + 539 = 48510
Step 91: 48510 + 539 = 49049
Step 92: 49049 + 539 = 49588
Step 93: 49588 + 539 = 50127
Step 94: 50127 + 539 = 50666
Step 95: 50666 + 539 = 51205
Step 96: 51205 + 539 = 51744
Step 97: 51744 + 539 = 52283
Step 98: 52283 + 539 = 52822
Step 99: 52822 + 539 = 53361
Step 100: 53361 + 539 = 53900
Step 101: 53900 + 539 = 54439
Step 102: 54439 + 539 = 54978
Step 103: 54978 + 539 = 55517
Step 104: 55517 + 539 = 56056
Step 105: 56056 + 539 = 56595
Step 106: 56595 + 539 = 57134
Step 107: 57134 + 539 = 57673
Step 108: 57673 + 539 = 58212
Step 109: 58212 + 539 = 58751
Step 110: 58751 + 539 = 59290
Step 111: 59290 + 539 = 59829
Step 112: 59829 + 539 = 60368
Step 113: 60368 + 539 = 60907
Step 114: 60907 + 539 = 61446
Step 115: 61446 + 539 = 61985
Step 116: 61985 + 539 = 62524
Step 117: 62524 + 539 = 63063
Step 118: 63063 + 539 = 63602
Step 119: 63602 + 539 = 64141
Step 120: 64141 + 539 = 64680
Step 121: 64680 + 539 = 65219
Step 122: 65219 + 539 = 65758
Step 123: 65758 + 539 = 66297
Step 124: 66297 + 539 = 66836
Step 125: 66836 + 539 = 67375
Step 126: 67375 + 539 = 67914
Step 127: 67914 + 539 = 68453
Step 128: 68453 + 539 = 68992
Step 129: 68992 + 539 = 69531
Step 130: 69531 + 539 = 70070
Step 131: 70070 + 539 = 70609
Step 132: 70609 + 539 = 71148
Step 133: 71148 + 539 = 71687
Step 134: 71687 + 539 = 72226
Step 135: 72226 + 539 = 72765
Step 136: 72765 + 539 = 73304
Step 137: 73304 + 539 = 73843
Step 138: 73843 + 539 = 74382
Step 139: 74382 + 539 = 74921
Step 140: 74921 + 539 = 75460
Step 141: 75460 + 539 = 75999
Step 142: 75999 + 539 = 76538
Step 143: 76538 + 539 = 77077
Step 144: 77077 + 539 = 77616
Step 145: 77616 + 539 = 78155
Step 146: 78155 + 539 = 78694
Step 147: 78694 + 539 = 79233
Step 148: 79233 + 539 = 79772
Step 149: 79772 + 539 = 80311
Step 150: 80311 + 539 = 80850
Step 151: 80850 + 539 = 81389
Step 152: 81389 + 539 = 81928
Step 153: 81928 + 539 = 82467
Step 154: 82467 + 539 = 83006
Step 155: 83006 + 539 = 83545
Step 156: 83545 + 539 = 84084
Step 157: 84084 + 539 = 84623
Step 158: 84623 + 539 = 85162
Step 159: 85162 + 539 = 85701
Step 160: 85701 + 539 = 86240
Step 161: 86240 + 539 = 86779
Step 162: 86779 + 539 = 87318
Step 163: 87318 + 539 = 87857
Step 164: 87857 + 539 = 88396
Step 165: 88396 + 539 = 88935
Step 166: 88935 + 539 = 89474
Step 167: 89474 + 539 = 90013
Step 168: 90013 + 539 = 90552
Step 169: 90552 + 539 = 91091
Step 170: 91091 + 539 = 91630
Step 171: 91630 + 539 = 92169
Step 172: 92169 + 539 = 92708
Step 173: 92708 + 539 = 93247
Step 174: 93247 + 539 = 93786
Step 175: 93786 + 539 = 94325
Step 176: 94325 + 539 = 94864
Step 177: 94864 + 539 = 95403
Step 178: 95403 + 539 = 95942
Step 179: 95942 + 539 = 96481
Step 180: 96481 + 539 = 97020
Step 181: 97020 + 539 = 97559
Step 182: 97559 + 539 = 98098
Step 183: 98098 + 539 = 98637
Step 184: 98637 + 539 = 99176
Step 185: 99176 + 539 = 99715
Step 186: 99715 + 539 = 100254
Step 187: 100254 + 539 = 100793
Step 188: 100793 + 539 = 101332
Step 189: 101332 + 539 = 101871
Step 190: 101871 + 539 = 102410
Step 191: 102410 + 539 = 102949
Step 192: 102949 + 539 = 103488
Step 193: 103488 + 539 = 104027
Step 194: 104027 + 539 = 104566
Step 195: 104566 + 539 = 105105
Step 196: 105105 + 539 = 105644
Step 197: 105644 + 539 = 106183
Step 198: 106183 + 539 = 106722
Step 199: 106722 + 539 = 107261
Step 200: 107261 + 539 = 107800
Step 201: 107800 + 539 = 108339
Step 202: 108339 + 539 = 108878
Step 203: 108878 + 539 = 109417
Step 204: 109417 + 539 = 109956
Step 205: 109956 + 539 = 110495
Step 206: 110495 + 539 = 111034
Step 207: 111034 + 539 = 111573
Step 208: 111573 + 539 = 112112
Step 209: 112112 + 539 = 112651
Step 210: 112651 + 539 = 113190
Step 211: 113190 + 539 = 113729
Step 212: 113729 + 539 = 114268
Step 213: 114268 + 539 = 114807
Step 214: 114807 + 539 = 115346
Step 215: 115346 + 539 = 115885
Step 216: 115885 + 539 = 116424
Step 217: 116424 + 539 = 116963
Step 218: 116963 + 539 = 117502
Step 219: 117502 + 539 = 118041
Step 220: 118041 + 539 = 118580
Step 221: 118580 + 539 = 119119
Step 222: 119119 + 539 = 119658
Step 223: 119658 + 539 = 120197
Step 224: 120197 + 539 = 120736
Step 225: 120736 + 539 = 121275
Step 226: 121275 + 539 = 121814
Step 227: 121814 + 539 = 122353
Step 228: 122353 + 539 = 122892
Step 229: 122892 + 539 = 123431
Step 230: 123431 + 539 = 123970
Step 231: 123970 + 539 = 124509
Step 232: 124509 + 539 = 125048
Step 233: 125048 + 539 = 125587
Step 234: 125587 + 539 = 126126
Step 235: 126126 + 539 = 126665
Step 236: 126665 + 539 = 127204
Step 237: 127204 + 539 = 127743
Step 238: 127743 + 539 = 128282
Step 239: 128282 + 539 = 128821
Step 240: 128821 + 539 = 129360
Step 241: 129360 + 539 = 129899
Step 242: 129899 + 539 = 130438
Step 243: 130438 + 539 = 130977
Step 244: 130977 + 539 = 131516
Step 245: 131516 + 539 = 132055
Step 246: 132055 + 539 = 132594
Step 247: 132594 + 539 = 133133
Step 248: 133133 + 539 = 133672
Step 249: 133672 + 539 = 134211
Step 250: 134211 + 539 = 134750
Step 251: 134750 + 539 = 135289
Step 252: 135289 + 539 = 135828
Step 253: 135828 + 539 = 136367
Step 254: 136367 + 539 = 136906
Step 255: 136906 + 539 = 137445
Step 256: 137445 + 539 = 137984
Step 257: 137984 + 539 = 138523
Step 258: 138523 + 539 = 139062
Step 259: 139062 + 539 = 139601
Step 260: 139601 + 539 = 140140
Step 261: 140140 + 539 = 140679
Step 262: 140679 + 539 = 141218
Step 263: 141218 + 539 = 141757
Step 264: 141757 + 539 = 142296
Step 265: 142296 + 539 = 142835
Step 266: 142835 + 539 = 143374
Step 267: 143374 + 539 = 143913
Step 268: 143913 + 539 = 144452
Step 269: 144452 + 539 = 144991
Step 270: 144991 + 539 = 145530
Step 271: 145530 + 539 = 146069
Step 272: 146069 + 539 = 146608
Step 273: 146608 + 539 = 147147
Step 274: 147147 + 539 = 147686
Step 275: 147686 + 539 = 148225
Step 276: 148225 + 539 = 148764
Step 277: 148764 + 539 = 149303
Step 278: 149303 + 539 = 149842
Step 279: 149842 + 539 = 150381
Step 280: 150381 + 539 = 150920
Step 281: 150920 + 539 = 151459
Step 282: 151459 + 539 = 151998
Step 283: 151998 + 539 = 152537
Step 284: 152537 + 539 = 153076
Step 285: 153076 + 539 = 153615
Step 286: 153615 + 539 = 154154
Step 287: 154154 + 539 = 154693
Step 288: 154693 + 539 = 155232
Step 289: 155232 + 539 = 155771
Step 290: 155771 + 539 = 156310
Step 291: 156310 + 539 = 156849
Step 292: 156849 + 539 = 157388
Step 293: 157388 + 539 = 157927
Step 294: 157927 + 539 = 158466
Step 295: 158466 + 539 = 159005
Step 296: 159005 + 539 = 159544
Step 297: 159544 + 539 = 160083
Step 298: 160083 + 539 = 160622
Step 299: 160622 + 539 = 161161
Step 300: 161161 + 539 = 161700
Step 301: 161700 + 539 = 162239
Step 302: 162239 + 539 = 162778
Step 303: 162778 + 539 = 163317
Step 304: 163317 + 539 = 163856
Step 305: 163856 + 539 = 164395
Step 306: 164395 + 539 = 164934
Step 307: 164934 + 539 = 165473
Step 308: 165473 + 539 = 166012
Step 309: 166012 + 539 = 166551
Step 310: 166551 + 539 = 167090
Step 311: 167090 + 539 = 167629
Step 312: 167629 + 539 = 168168
Step 313: 168168 + 539 = 168707

So, 539*313 = 168707