A chair is 54 yuan, a desk is 146 yuan, the school bought 65 sets of desks and chairs, how much did it cost in total?
一把椅子54元，一张课桌146元，学校买了65套课桌椅，一共花了多少钱？
<gadget id="calculator">54 + 146</gadget>
<output>200</output>

<gadget id="calculator">200 * 65</gadget>
<output>13_000</output>

<result>13_000</result>