余分 is read as よぶん (yobun) and means extra.
よぶん
yobun
あまり
(not) very
よち
place
よけい
all the more
よじん
others
あまる
to remain
あます
to save
よだん
digression
よそ
another place
よりょく
money to spare
よほど
just about to
あまりに
too (much)
よねん
another idea