1946 - 2009 = -63
1,946 minus 1,814 is 132.
64
2010 minus 1994 = 16
2010 minus 1939 is 71.
2010 minus 1981 is 29.
2010 minus 1895 equals 115(2010-1895=115)
2010 minus 1993 equals 17.
-7990 (minus 7990)
2010 - 1996 = 14
2010 - 1947 = 63
2010 - 673 = 1337