The school bought 120 sets of desks and chairs, each desk was 75 yuan, and each chair was 50 yuan. How much did you spend on the desks and chairs?
学校买了120套课桌椅，每张桌子75元，每把椅子50元，买课桌椅一共花了多少元钱．
<gadget id="calculator">75 + 50</gadget>
<output>125</output>

<gadget id="calculator">125 * 120</gadget>
<output>15_000</output>

<result>15_000</result>