Multiply each row in the first matrix by each column in the second matrix .

Simplify each element of the matrix by multiplying out all the expressions.

is in the most simplified form.

Simplify [[52,50,75,20],[45,40,80,20],[58,70,78,25]]*[[0.20,0.50],[0.25,0.75],[0.15,0.050],[0.10,0.60]]