Consider the Cobb$-$Douslas Production function: $P(L,K)=13L^{0\mathrm{.}6}{K}^{0\mathrm{.}4}.$

Find the marginal productivity of labor and marginal productivity of capital when $15$ units of labor and $20$ units of capital are invested. $($Your answers will be numbers, not functions or expressions$).$ Give your answer to three $(3)$ decimal places if necessary.

Marginal Productivity of Labor when $L$ is $15$ and $K$ is $20=$

Marginal Productivity of Capital when $L$ is $15$ and $K$ is $20=$