Let's get this math done. We have 101 and we're going to multiply it by 103. This is the same as taking 101 and adding it to itself 103 times.
Step 1: 0 + 101 = 101
Step 2: 101 + 101 = 202
Step 3: 202 + 101 = 303
Step 4: 303 + 101 = 404
Step 5: 404 + 101 = 505
Step 6: 505 + 101 = 606
Step 7: 606 + 101 = 707
Step 8: 707 + 101 = 808
Step 9: 808 + 101 = 909
Step 10: 909 + 101 = 1010
Step 11: 1010 + 101 = 1111
Step 12: 1111 + 101 = 1212
Step 13: 1212 + 101 = 1313
Step 14: 1313 + 101 = 1414
Step 15: 1414 + 101 = 1515
Step 16: 1515 + 101 = 1616
Step 17: 1616 + 101 = 1717
Step 18: 1717 + 101 = 1818
Step 19: 1818 + 101 = 1919
Step 20: 1919 + 101 = 2020
Step 21: 2020 + 101 = 2121
Step 22: 2121 + 101 = 2222
Step 23: 2222 + 101 = 2323
Step 24: 2323 + 101 = 2424
Step 25: 2424 + 101 = 2525
Step 26: 2525 + 101 = 2626
Step 27: 2626 + 101 = 2727
Step 28: 2727 + 101 = 2828
Step 29: 2828 + 101 = 2929
Step 30: 2929 + 101 = 3030
Step 31: 3030 + 101 = 3131
Step 32: 3131 + 101 = 3232
Step 33: 3232 + 101 = 3333
Step 34: 3333 + 101 = 3434
Step 35: 3434 + 101 = 3535
Step 36: 3535 + 101 = 3636
Step 37: 3636 + 101 = 3737
Step 38: 3737 + 101 = 3838
Step 39: 3838 + 101 = 3939
Step 40: 3939 + 101 = 4040
Step 41: 4040 + 101 = 4141
Step 42: 4141 + 101 = 4242
Step 43: 4242 + 101 = 4343
Step 44: 4343 + 101 = 4444
Step 45: 4444 + 101 = 4545
Step 46: 4545 + 101 = 4646
Step 47: 4646 + 101 = 4747
Step 48: 4747 + 101 = 4848
Step 49: 4848 + 101 = 4949
Step 50: 4949 + 101 = 5050
Step 51: 5050 + 101 = 5151
Step 52: 5151 + 101 = 5252
Step 53: 5252 + 101 = 5353
Step 54: 5353 + 101 = 5454
Step 55: 5454 + 101 = 5555
Step 56: 5555 + 101 = 5656
Step 57: 5656 + 101 = 5757
Step 58: 5757 + 101 = 5858
Step 59: 5858 + 101 = 5959
Step 60: 5959 + 101 = 6060
Step 61: 6060 + 101 = 6161
Step 62: 6161 + 101 = 6262
Step 63: 6262 + 101 = 6363
Step 64: 6363 + 101 = 6464
Step 65: 6464 + 101 = 6565
Step 66: 6565 + 101 = 6666
Step 67: 6666 + 101 = 6767
Step 68: 6767 + 101 = 6868
Step 69: 6868 + 101 = 6969
Step 70: 6969 + 101 = 7070
Step 71: 7070 + 101 = 7171
Step 72: 7171 + 101 = 7272
Step 73: 7272 + 101 = 7373
Step 74: 7373 + 101 = 7474
Step 75: 7474 + 101 = 7575
Step 76: 7575 + 101 = 7676
Step 77: 7676 + 101 = 7777
Step 78: 7777 + 101 = 7878
Step 79: 7878 + 101 = 7979
Step 80: 7979 + 101 = 8080
Step 81: 8080 + 101 = 8181
Step 82: 8181 + 101 = 8282
Step 83: 8282 + 101 = 8383
Step 84: 8383 + 101 = 8484
Step 85: 8484 + 101 = 8585
Step 86: 8585 + 101 = 8686
Step 87: 8686 + 101 = 8787
Step 88: 8787 + 101 = 8888
Step 89: 8888 + 101 = 8989
Step 90: 8989 + 101 = 9090
Step 91: 9090 + 101 = 9191
Step 92: 9191 + 101 = 9292
Step 93: 9292 + 101 = 9393
Step 94: 9393 + 101 = 9494
Step 95: 9494 + 101 = 9595
Step 96: 9595 + 101 = 9696
Step 97: 9696 + 101 = 9797
Step 98: 9797 + 101 = 9898
Step 99: 9898 + 101 = 9999
Step 100: 9999 + 101 = 10100
Step 101: 10100 + 101 = 10201
Step 102: 10201 + 101 = 10302
Step 103: 10302 + 101 = 10403

So, 101*103 = 10403