2,013 minus 1,956 is 57.
1,994 minus 1,956 is 38.
1,894 minus 1,956 is -62.
2013 minus 1958 = 55
55
1,993 minus 2,013 is -20.
2,013 minus 1,919 is 94.
2,013 minus 1,929 is 84.
2,013 minus 1,727 is 286.
2,013 minus 30 is 1,983.
2,013 minus 1,912 is 101.
2,013 minus 1,936 is 77.