Sure thing! We've got 503 and we're gonna multiply it by 279. That's the same as adding 503 to itself 279 times.
Step 1: 0 + 503 = 503
Step 2: 503 + 503 = 1006
Step 3: 1006 + 503 = 1509
Step 4: 1509 + 503 = 2012
Step 5: 2012 + 503 = 2515
Step 6: 2515 + 503 = 3018
Step 7: 3018 + 503 = 3521
Step 8: 3521 + 503 = 4024
Step 9: 4024 + 503 = 4527
Step 10: 4527 + 503 = 5030
Step 11: 5030 + 503 = 5533
Step 12: 5533 + 503 = 6036
Step 13: 6036 + 503 = 6539
Step 14: 6539 + 503 = 7042
Step 15: 7042 + 503 = 7545
Step 16: 7545 + 503 = 8048
Step 17: 8048 + 503 = 8551
Step 18: 8551 + 503 = 9054
Step 19: 9054 + 503 = 9557
Step 20: 9557 + 503 = 10060
Step 21: 10060 + 503 = 10563
Step 22: 10563 + 503 = 11066
Step 23: 11066 + 503 = 11569
Step 24: 11569 + 503 = 12072
Step 25: 12072 + 503 = 12575
Step 26: 12575 + 503 = 13078
Step 27: 13078 + 503 = 13581
Step 28: 13581 + 503 = 14084
Step 29: 14084 + 503 = 14587
Step 30: 14587 + 503 = 15090
Step 31: 15090 + 503 = 15593
Step 32: 15593 + 503 = 16096
Step 33: 16096 + 503 = 16599
Step 34: 16599 + 503 = 17102
Step 35: 17102 + 503 = 17605
Step 36: 17605 + 503 = 18108
Step 37: 18108 + 503 = 18611
Step 38: 18611 + 503 = 19114
Step 39: 19114 + 503 = 19617
Step 40: 19617 + 503 = 20120
Step 41: 20120 + 503 = 20623
Step 42: 20623 + 503 = 21126
Step 43: 21126 + 503 = 21629
Step 44: 21629 + 503 = 22132
Step 45: 22132 + 503 = 22635
Step 46: 22635 + 503 = 23138
Step 47: 23138 + 503 = 23641
Step 48: 23641 + 503 = 24144
Step 49: 24144 + 503 = 24647
Step 50: 24647 + 503 = 25150
Step 51: 25150 + 503 = 25653
Step 52: 25653 + 503 = 26156
Step 53: 26156 + 503 = 26659
Step 54: 26659 + 503 = 27162
Step 55: 27162 + 503 = 27665
Step 56: 27665 + 503 = 28168
Step 57: 28168 + 503 = 28671
Step 58: 28671 + 503 = 29174
Step 59: 29174 + 503 = 29677
Step 60: 29677 + 503 = 30180
Step 61: 30180 + 503 = 30683
Step 62: 30683 + 503 = 31186
Step 63: 31186 + 503 = 31689
Step 64: 31689 + 503 = 32192
Step 65: 32192 + 503 = 32695
Step 66: 32695 + 503 = 33198
Step 67: 33198 + 503 = 33701
Step 68: 33701 + 503 = 34204
Step 69: 34204 + 503 = 34707
Step 70: 34707 + 503 = 35210
Step 71: 35210 + 503 = 35713
Step 72: 35713 + 503 = 36216
Step 73: 36216 + 503 = 36719
Step 74: 36719 + 503 = 37222
Step 75: 37222 + 503 = 37725
Step 76: 37725 + 503 = 38228
Step 77: 38228 + 503 = 38731
Step 78: 38731 + 503 = 39234
Step 79: 39234 + 503 = 39737
Step 80: 39737 + 503 = 40240
Step 81: 40240 + 503 = 40743
Step 82: 40743 + 503 = 41246
Step 83: 41246 + 503 = 41749
Step 84: 41749 + 503 = 42252
Step 85: 42252 + 503 = 42755
Step 86: 42755 + 503 = 43258
Step 87: 43258 + 503 = 43761
Step 88: 43761 + 503 = 44264
Step 89: 44264 + 503 = 44767
Step 90: 44767 + 503 = 45270
Step 91: 45270 + 503 = 45773
Step 92: 45773 + 503 = 46276
Step 93: 46276 + 503 = 46779
Step 94: 46779 + 503 = 47282
Step 95: 47282 + 503 = 47785
Step 96: 47785 + 503 = 48288
Step 97: 48288 + 503 = 48791
Step 98: 48791 + 503 = 49294
Step 99: 49294 + 503 = 49797
Step 100: 49797 + 503 = 50300
Step 101: 50300 + 503 = 50803
Step 102: 50803 + 503 = 51306
Step 103: 51306 + 503 = 51809
Step 104: 51809 + 503 = 52312
Step 105: 52312 + 503 = 52815
Step 106: 52815 + 503 = 53318
Step 107: 53318 + 503 = 53821
Step 108: 53821 + 503 = 54324
Step 109: 54324 + 503 = 54827
Step 110: 54827 + 503 = 55330
Step 111: 55330 + 503 = 55833
Step 112: 55833 + 503 = 56336
Step 113: 56336 + 503 = 56839
Step 114: 56839 + 503 = 57342
Step 115: 57342 + 503 = 57845
Step 116: 57845 + 503 = 58348
Step 117: 58348 + 503 = 58851
Step 118: 58851 + 503 = 59354
Step 119: 59354 + 503 = 59857
Step 120: 59857 + 503 = 60360
Step 121: 60360 + 503 = 60863
Step 122: 60863 + 503 = 61366
Step 123: 61366 + 503 = 61869
Step 124: 61869 + 503 = 62372
Step 125: 62372 + 503 = 62875
Step 126: 62875 + 503 = 63378
Step 127: 63378 + 503 = 63881
Step 128: 63881 + 503 = 64384
Step 129: 64384 + 503 = 64887
Step 130: 64887 + 503 = 65390
Step 131: 65390 + 503 = 65893
Step 132: 65893 + 503 = 66396
Step 133: 66396 + 503 = 66899
Step 134: 66899 + 503 = 67402
Step 135: 67402 + 503 = 67905
Step 136: 67905 + 503 = 68408
Step 137: 68408 + 503 = 68911
Step 138: 68911 + 503 = 69414
Step 139: 69414 + 503 = 69917
Step 140: 69917 + 503 = 70420
Step 141: 70420 + 503 = 70923
Step 142: 70923 + 503 = 71426
Step 143: 71426 + 503 = 71929
Step 144: 71929 + 503 = 72432
Step 145: 72432 + 503 = 72935
Step 146: 72935 + 503 = 73438
Step 147: 73438 + 503 = 73941
Step 148: 73941 + 503 = 74444
Step 149: 74444 + 503 = 74947
Step 150: 74947 + 503 = 75450
Step 151: 75450 + 503 = 75953
Step 152: 75953 + 503 = 76456
Step 153: 76456 + 503 = 76959
Step 154: 76959 + 503 = 77462
Step 155: 77462 + 503 = 77965
Step 156: 77965 + 503 = 78468
Step 157: 78468 + 503 = 78971
Step 158: 78971 + 503 = 79474
Step 159: 79474 + 503 = 79977
Step 160: 79977 + 503 = 80480
Step 161: 80480 + 503 = 80983
Step 162: 80983 + 503 = 81486
Step 163: 81486 + 503 = 81989
Step 164: 81989 + 503 = 82492
Step 165: 82492 + 503 = 82995
Step 166: 82995 + 503 = 83498
Step 167: 83498 + 503 = 84001
Step 168: 84001 + 503 = 84504
Step 169: 84504 + 503 = 85007
Step 170: 85007 + 503 = 85510
Step 171: 85510 + 503 = 86013
Step 172: 86013 + 503 = 86516
Step 173: 86516 + 503 = 87019
Step 174: 87019 + 503 = 87522
Step 175: 87522 + 503 = 88025
Step 176: 88025 + 503 = 88528
Step 177: 88528 + 503 = 89031
Step 178: 89031 + 503 = 89534
Step 179: 89534 + 503 = 90037
Step 180: 90037 + 503 = 90540
Step 181: 90540 + 503 = 91043
Step 182: 91043 + 503 = 91546
Step 183: 91546 + 503 = 92049
Step 184: 92049 + 503 = 92552
Step 185: 92552 + 503 = 93055
Step 186: 93055 + 503 = 93558
Step 187: 93558 + 503 = 94061
Step 188: 94061 + 503 = 94564
Step 189: 94564 + 503 = 95067
Step 190: 95067 + 503 = 95570
Step 191: 95570 + 503 = 96073
Step 192: 96073 + 503 = 96576
Step 193: 96576 + 503 = 97079
Step 194: 97079 + 503 = 97582
Step 195: 97582 + 503 = 98085
Step 196: 98085 + 503 = 98588
Step 197: 98588 + 503 = 99091
Step 198: 99091 + 503 = 99594
Step 199: 99594 + 503 = 100097
Step 200: 100097 + 503 = 100600
Step 201: 100600 + 503 = 101103
Step 202: 101103 + 503 = 101606
Step 203: 101606 + 503 = 102109
Step 204: 102109 + 503 = 102612
Step 205: 102612 + 503 = 103115
Step 206: 103115 + 503 = 103618
Step 207: 103618 + 503 = 104121
Step 208: 104121 + 503 = 104624
Step 209: 104624 + 503 = 105127
Step 210: 105127 + 503 = 105630
Step 211: 105630 + 503 = 106133
Step 212: 106133 + 503 = 106636
Step 213: 106636 + 503 = 107139
Step 214: 107139 + 503 = 107642
Step 215: 107642 + 503 = 108145
Step 216: 108145 + 503 = 108648
Step 217: 108648 + 503 = 109151
Step 218: 109151 + 503 = 109654
Step 219: 109654 + 503 = 110157
Step 220: 110157 + 503 = 110660
Step 221: 110660 + 503 = 111163
Step 222: 111163 + 503 = 111666
Step 223: 111666 + 503 = 112169
Step 224: 112169 + 503 = 112672
Step 225: 112672 + 503 = 113175
Step 226: 113175 + 503 = 113678
Step 227: 113678 + 503 = 114181
Step 228: 114181 + 503 = 114684
Step 229: 114684 + 503 = 115187
Step 230: 115187 + 503 = 115690
Step 231: 115690 + 503 = 116193
Step 232: 116193 + 503 = 116696
Step 233: 116696 + 503 = 117199
Step 234: 117199 + 503 = 117702
Step 235: 117702 + 503 = 118205
Step 236: 118205 + 503 = 118708
Step 237: 118708 + 503 = 119211
Step 238: 119211 + 503 = 119714
Step 239: 119714 + 503 = 120217
Step 240: 120217 + 503 = 120720
Step 241: 120720 + 503 = 121223
Step 242: 121223 + 503 = 121726
Step 243: 121726 + 503 = 122229
Step 244: 122229 + 503 = 122732
Step 245: 122732 + 503 = 123235
Step 246: 123235 + 503 = 123738
Step 247: 123738 + 503 = 124241
Step 248: 124241 + 503 = 124744
Step 249: 124744 + 503 = 125247
Step 250: 125247 + 503 = 125750
Step 251: 125750 + 503 = 126253
Step 252: 126253 + 503 = 126756
Step 253: 126756 + 503 = 127259
Step 254: 127259 + 503 = 127762
Step 255: 127762 + 503 = 128265
Step 256: 128265 + 503 = 128768
Step 257: 128768 + 503 = 129271
Step 258: 129271 + 503 = 129774
Step 259: 129774 + 503 = 130277
Step 260: 130277 + 503 = 130780
Step 261: 130780 + 503 = 131283
Step 262: 131283 + 503 = 131786
Step 263: 131786 + 503 = 132289
Step 264: 132289 + 503 = 132792
Step 265: 132792 + 503 = 133295
Step 266: 133295 + 503 = 133798
Step 267: 133798 + 503 = 134301
Step 268: 134301 + 503 = 134804
Step 269: 134804 + 503 = 135307
Step 270: 135307 + 503 = 135810
Step 271: 135810 + 503 = 136313
Step 272: 136313 + 503 = 136816
Step 273: 136816 + 503 = 137319
Step 274: 137319 + 503 = 137822
Step 275: 137822 + 503 = 138325
Step 276: 138325 + 503 = 138828
Step 277: 138828 + 503 = 139331
Step 278: 139331 + 503 = 139834
Step 279: 139834 + 503 = 140337

So, 503*279 = 140337