Alright, let's solve this math problem step by step. First, we have the number 19. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 139. So, we're going to take the number 19 and add it to itself 139 times.
Step 1: 0 + 19 = 19
Step 2: 19 + 19 = 38
Step 3: 38 + 19 = 57
Step 4: 57 + 19 = 76
Step 5: 76 + 19 = 95
Step 6: 95 + 19 = 114
Step 7: 114 + 19 = 133
Step 8: 133 + 19 = 152
Step 9: 152 + 19 = 171
Step 10: 171 + 19 = 190
Step 11: 190 + 19 = 209
Step 12: 209 + 19 = 228
Step 13: 228 + 19 = 247
Step 14: 247 + 19 = 266
Step 15: 266 + 19 = 285
Step 16: 285 + 19 = 304
Step 17: 304 + 19 = 323
Step 18: 323 + 19 = 342
Step 19: 342 + 19 = 361
Step 20: 361 + 19 = 380
Step 21: 380 + 19 = 399
Step 22: 399 + 19 = 418
Step 23: 418 + 19 = 437
Step 24: 437 + 19 = 456
Step 25: 456 + 19 = 475
Step 26: 475 + 19 = 494
Step 27: 494 + 19 = 513
Step 28: 513 + 19 = 532
Step 29: 532 + 19 = 551
Step 30: 551 + 19 = 570
Step 31: 570 + 19 = 589
Step 32: 589 + 19 = 608
Step 33: 608 + 19 = 627
Step 34: 627 + 19 = 646
Step 35: 646 + 19 = 665
Step 36: 665 + 19 = 684
Step 37: 684 + 19 = 703
Step 38: 703 + 19 = 722
Step 39: 722 + 19 = 741
Step 40: 741 + 19 = 760
Step 41: 760 + 19 = 779
Step 42: 779 + 19 = 798
Step 43: 798 + 19 = 817
Step 44: 817 + 19 = 836
Step 45: 836 + 19 = 855
Step 46: 855 + 19 = 874
Step 47: 874 + 19 = 893
Step 48: 893 + 19 = 912
Step 49: 912 + 19 = 931
Step 50: 931 + 19 = 950
Step 51: 950 + 19 = 969
Step 52: 969 + 19 = 988
Step 53: 988 + 19 = 1007
Step 54: 1007 + 19 = 1026
Step 55: 1026 + 19 = 1045
Step 56: 1045 + 19 = 1064
Step 57: 1064 + 19 = 1083
Step 58: 1083 + 19 = 1102
Step 59: 1102 + 19 = 1121
Step 60: 1121 + 19 = 1140
Step 61: 1140 + 19 = 1159
Step 62: 1159 + 19 = 1178
Step 63: 1178 + 19 = 1197
Step 64: 1197 + 19 = 1216
Step 65: 1216 + 19 = 1235
Step 66: 1235 + 19 = 1254
Step 67: 1254 + 19 = 1273
Step 68: 1273 + 19 = 1292
Step 69: 1292 + 19 = 1311
Step 70: 1311 + 19 = 1330
Step 71: 1330 + 19 = 1349
Step 72: 1349 + 19 = 1368
Step 73: 1368 + 19 = 1387
Step 74: 1387 + 19 = 1406
Step 75: 1406 + 19 = 1425
Step 76: 1425 + 19 = 1444
Step 77: 1444 + 19 = 1463
Step 78: 1463 + 19 = 1482
Step 79: 1482 + 19 = 1501
Step 80: 1501 + 19 = 1520
Step 81: 1520 + 19 = 1539
Step 82: 1539 + 19 = 1558
Step 83: 1558 + 19 = 1577
Step 84: 1577 + 19 = 1596
Step 85: 1596 + 19 = 1615
Step 86: 1615 + 19 = 1634
Step 87: 1634 + 19 = 1653
Step 88: 1653 + 19 = 1672
Step 89: 1672 + 19 = 1691
Step 90: 1691 + 19 = 1710
Step 91: 1710 + 19 = 1729
Step 92: 1729 + 19 = 1748
Step 93: 1748 + 19 = 1767
Step 94: 1767 + 19 = 1786
Step 95: 1786 + 19 = 1805
Step 96: 1805 + 19 = 1824
Step 97: 1824 + 19 = 1843
Step 98: 1843 + 19 = 1862
Step 99: 1862 + 19 = 1881
Step 100: 1881 + 19 = 1900
Step 101: 1900 + 19 = 1919
Step 102: 1919 + 19 = 1938
Step 103: 1938 + 19 = 1957
Step 104: 1957 + 19 = 1976
Step 105: 1976 + 19 = 1995
Step 106: 1995 + 19 = 2014
Step 107: 2014 + 19 = 2033
Step 108: 2033 + 19 = 2052
Step 109: 2052 + 19 = 2071
Step 110: 2071 + 19 = 2090
Step 111: 2090 + 19 = 2109
Step 112: 2109 + 19 = 2128
Step 113: 2128 + 19 = 2147
Step 114: 2147 + 19 = 2166
Step 115: 2166 + 19 = 2185
Step 116: 2185 + 19 = 2204
Step 117: 2204 + 19 = 2223
Step 118: 2223 + 19 = 2242
Step 119: 2242 + 19 = 2261
Step 120: 2261 + 19 = 2280
Step 121: 2280 + 19 = 2299
Step 122: 2299 + 19 = 2318
Step 123: 2318 + 19 = 2337
Step 124: 2337 + 19 = 2356
Step 125: 2356 + 19 = 2375
Step 126: 2375 + 19 = 2394
Step 127: 2394 + 19 = 2413
Step 128: 2413 + 19 = 2432
Step 129: 2432 + 19 = 2451
Step 130: 2451 + 19 = 2470
Step 131: 2470 + 19 = 2489
Step 132: 2489 + 19 = 2508
Step 133: 2508 + 19 = 2527
Step 134: 2527 + 19 = 2546
Step 135: 2546 + 19 = 2565
Step 136: 2565 + 19 = 2584
Step 137: 2584 + 19 = 2603
Step 138: 2603 + 19 = 2622
Step 139: 2622 + 19 = 2641

So, 19*139 = 2641