I have a list of ages in one column, adjacent to it, is the 'fractional' part
of the age:

AGE     INT    AGE-INT
54.32    54    0.32
55.21    55    0.21
55.43    55    0.43
55.54    55    0.54
56.88    56    0.88
56.94    56    0.94

I want to create a column that would sum 'AGE-INT' where all the 'INT's are
the same.  For example the above might produce: '0.32  1.18  0  0  1.82  0'.  
The zeroes could be in different places or not even present, that would be
fine.  Is there a way to do this without writing a macro, because I've never
done that before.