Fill in the yellow boxs using "open-to-buy" formula

\begin{tabular}{|c|c|c|c|c|c|c|c|} \hline 6 Month OTB Plan & June & July & A uggust & September & October & November & 7 \\ \hline Beginning of the Month Inventery & $155,000 & $150,000 & & $157,000 & $157,000 & & \\ \hline Sales & $47,000 & $48,000 & 550,000 & $50,000 & $52,000 & $48,000 & \\ \hline Markdowns & $1,000 & & $750 & $1,000 & $1,500 & $1,000 & \\ \hline Open - to - buy (at retail) & $43,000 & $50,750 & $55,750 & & $61,500 & $37,000 & \\ \hline Open - to - buy (at cost) & & & & & & & if the initial markup is 40% \\ \hline End of Month Inventory & $150,000 & $152,000 & $157,000 & $157,000 & & $153,000 & \\ \hline & & & & & & & \\ \hline The Open-To-Buy Formula & & & & & & & \\ \hline Planned Sales & & & & & & & \\ \hline + Planned Markdowns & +1 & & & & & & \\ \hline + Planned End of Month Inventory & & & & & & & \\ \hline - Planned Beginning of Month lnventory & & & & & & & \\ \hline Open-to-Buy (at retail) & & & & & & & \\ \hline \end{tabular}