In fruit flies, grey bodies are dominant to black bodies and normal wings are dominant to vestigial wings. The recombination frequency between these two genes is approximately 20%. A true-breeding grey-bodied fly with normal wings is crossed with a true-breeding black-bodied fly with vestigial wings. You then take two of the offspring and cross them with each other. What is the probability that the offspring of this second cross has a black body and vestigial wings?