The school bought 8 sets of desks and chairs, each desk was 32.8 yuan, and each chair was 17.2 yuan. How much did it cost?
学校买来8套课桌椅，每张桌子32.8元，每张椅子17.2元，一共花了多少钱？
<gadget id="calculator">32.8 + 17.2</gadget>
<output>50</output>

<gadget id="calculator">50 * 8</gadget>
<output>400</output>

<result>400</result>