A certain chemical reaction releases $20\mathrm{.}0k\frac{J}{g}$ of heat for each gram of reactant consumed. How can you calculate the heat produced by the consumption of

$1\mathrm{.}9kg$ of reactant?

Set the math up$.$ But don't do any of it$.$ Just leave your answer as a math expression.

Also, be sure your answer includes all the correct unit symbols.