The school purchased 75 sets of desks (a set of desks consists of a desk and a chair), each desk is 128 yuan, and each chair is 52 yuan. How much did you spend in total?
学校购买了75套课桌(一套课桌为一张课桌、一把椅子)，每张课桌128元，每把椅子52元，一共用了多少元？
<gadget id="calculator">128 + 52</gadget>
<output>180</output>

<gadget id="calculator">180 * 75</gadget>
<output>13_500</output>

<result>13_500</result>