Find the following product.

15ab / 4 * 8 / 9a^2 b^2

(15ab/4) * [8 / (9a^2b^2]=5*3ab/2^2*[2^3 / (3^2a^2b^2) ]

(15ab/4) * [8 / (9a^2b^2]=5*3*2^3ab / (2^2*3^2a^2b^2)

(15ab/4) * [8 / (9a^2b^2]=5*2^ (3-2) / [ (3^ (2-1) a^ (2-1) b^ (2-1) ]

(15ab/4) * [8 / (9a^2b^2]=5*2^1 / (3^1a^1b^1)

(15ab/4) * [8 / (9a^2b^2]=5*2 / (3ab)

(15ab/4) * [8 / (9a^2b^2]=10 / (3ab)