SUPERVALU, one of the largest grocery retailers in the United States, is headquartered in Minneapolis. Suppose the following financial information $($in millions$)$ was taken from the company$$s $2022$ annual report: net sales $$41,210,$ net income $$399,$ beginning common stockholders$$ equity $$2,595,$ and ending common stockholders$$ equity $$2,864.$

Compute the return on common stockholders$$ equity. $($Round answer to $1$ decimal place, e$.$g$.10\mathrm{.}5\%.)$