25a^-2 b^-5 c^8 / 40 a^5 c^9--this problem i come up with 5/8a7b5c..is this correct?

(25a^-2 b^-5 c^8) / (40 a^5 c^9)

25/40 = 5/8 check
a^-2/a^5 = a^-7 check
b^-5 = b^-5 check
c^8/c^9 = c^-1 check