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.

$(-2\mathrm{.}9{10}^3\frac{J}{\text{m}\text{o}\text{l}})=\frac{kJ}{\text{m}\text{o}\text{l}}$