Measurement and Matter

Setting up a one$-$step unit conversion

A student sets up the following equation to convert a measurement.

$($The $?$ stands for a number the student is going to calculate.$)$

Fill in the missing part of this equation.

$(-5\mathrm{.}2{10}^3\frac{g*m^2}{s^2})*prod=\frac{kg*m^2}{s^2}$