-5^2/(-0.8)^3*(-2/5)^2-1^2014

=-5^2/(-4/5)^3*(-2/5)^2-1

=5^2/(4/5)^3*(2/5)^2-1

=4/5*(2/5)^2-1

=4/5*(2/5)^2-1

=16/125 -1

=-109/125