What is the Economic Order Quantity?

Item stocked at a hardware store sells for $$80.$ Where d $=60$ units per week; $52$ weeks per year, Lead Time $=0\mathrm{.}5$ weeks, Ordering cost $=$ $$30$ per order, and Holding costs $=25\%$ of selling price

NOTE: ANSWER SHOULD BE $2$ DIGITS ONLY NO DECIMALS $($EXAMPLE: $52)$