2,013 minus 1,912 is 101.
2010 - 1912 = 98
1821 - 1912 = -91
1884
2013 minus 1958 = 55
2,013 minus 1,919 is 94.
2,013 minus 1,929 is 84.
1,993 minus 2,013 is -20.
1,942 minus 2,013 is -71.
2,013 minus 1,727 is 286.
2,013 minus 1,940 is 73.
2,013 minus 1,936 is 77.
1,956 minus 2,013 is -57.