Yingcai Primary School newly purchased 50 sets of desks and chairs. It is known that each chair is 25 yuan, and the price of each table is 15 yuan more than twice that of the chair. So, how much did the school spend on these desks and chairs?
英才小学新购买50套课桌椅，已知每把椅子25元，每张桌子的售价比椅子的2倍还多15元．那么，这次学校一共花了多少元买下这批课桌椅？
<gadget id="calculator">25 * 2</gadget>
<output>50</output>

<gadget id="calculator">50 + 15 + 25</gadget>
<output>90</output>

<gadget id="calculator">90 * 50</gadget>
<output>4_500</output>

<result>4_500</result>