In order to improve school conditions, the school purchased 25 sets of new desks and chairs (each desk is equipped with 2 chairs), each desk is 60 yuan, and each chair is 40 yuan. How much did you spend in total?
学校为改善办学条件，购买了25套新桌椅(每张桌子配2把椅子)，每张桌子60元，每把椅子40元，一共花了多少元？
<gadget id="calculator">40 * 2</gadget>
<output>80</output>

<gadget id="calculator">60 + 80</gadget>
<output>140</output>

<gadget id="calculator">140 * 25</gadget>
<output>3_500</output>

<result>3_500</result>