The school bought 120 sets of desks and chairs. The price of each case is 75 yuan, and the price of each chair is 36 yuan. How much did the school buy these desks and chairs?
学校买来120套课桌椅，每张案子的价格是75元，每把椅子的价格是36元，学校买这些课桌椅一共用去多少元？
<gadget id="calculator">75 + 36</gadget>
<output>111</output>

<gadget id="calculator">111 * 120</gadget>
<output>13_320</output>

<result>13_320</result>