My L had a form that we filled out--as well as having some average numbers when I had no idea about amounts for expenses. Might be worth checking to see if yours does too.
M60 H52 D20 M14 yrs OW-old gf from 1986 bomb-5/18/08 H filed for D-9/10/08 D final 4/24/09 xH remarried (not OW) 2012