Sanyuan Primary School newly bought 50 sets of desks and chairs for one person, each desk is 128 yuan, and each chair is 52 yuan. How much did it cost in total?
三元小学新买来50套单人课桌椅，每张课桌128元，每把椅子52元．一共用去多少元？
<gadget id="calculator">128 + 52</gadget>
<output>180</output>

<gadget id="calculator">180 * 50</gadget>
<output>9_000</output>

<result>9_000</result>