Kindly I want calculation details for each step

Problem$-1.$

On January $1$st$,2020,$ Simon's portfolio of $15$ common stocks had a market value of $\backslash (\backslash$$ $2,64,000\backslash ).$ At the end of May $20,2020,$ Simon sold one of the stocks which had a beginning$-$of$-$year value of $\backslash (\backslash$$ $26,300\backslash ),$ for $\backslash (\backslash$$ $31,500\backslash ).$ He did not reinvest those or any other funds in the portfolio during the year. He received total dividends from stocks in his portfolio of $\backslash (\backslash$$ $12,500\backslash )$ during the year. On December $31$st$,2020,$ Simon's portfolio had market value of $\backslash (\backslash$$ $250,000\backslash ).$ Find the HPR on Simons portfolio during the year ended December $31$st$,2020.($Measure the amount of withdrawn funds at their beginning of year value.$)$