The school bought 45 sets of desks and chairs for one person, each desk is 128 yuan, and each chair is 52 yuan. How much did you spend in total?
学校买来45套单人课桌椅，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 * 45</gadget>
<output>8_100</output>

<result>8_100</result>