The school bought 50 sets of desks and chairs; each desk is 20.4 yuan, and each chair is 8.25 yuan. How much do you need to pay in total?
学校买来50套课桌椅；课桌每张20.4元，椅子每把8.25元．一共需付多少钱？
<gadget id="calculator">20.4 + 8.25</gadget>
<output>28.65</output>

<gadget id="calculator">50 * 28.65</gadget>
<output>1_432.5</output>

<result>1_432.5</result>