2,013 minus 1,919 is 94.
1919
2012 - 1919 = 93
2013 minus 1958 = 55
1964-45=1919.
2,013 minus 1,936 is 77.
1,993 minus 2,013 is -20.
2,013 minus 1,912 is 101.
2,013 minus 1,929 is 84.
1,942 minus 2,013 is -71.
1,956 minus 2,013 is -57.
2,013 minus 1,956 is 57.
2,013 minus 30 is 1,983.