Mr. Li bought 5 desks and 8 chairs for the school, and spent a total of 1236 yuan. The price of each desk is 180 yuan, how much is each chair?
李总务帮学校买来5张办公桌和8把椅子，共花去1236元钱．每张办公桌的价钱是180元，每把椅子多少元？
<gadget id="calculator">180 * 5</gadget>
<output>900</output>

<gadget id="calculator">1_236 - 900</gadget>
<output>336</output>

<gadget id="calculator">336 / 8</gadget>
<output>42</output>

<result>42</result>