The school bought 30 sets of tables and chairs for a total of 7,200 yuan, of which 180 yuan per table. How much is each chair? (answer in two ways)
学校买了30套桌椅，共花了7200元，其中每张桌子180元，每把椅子多少钱？(用两种方法解答)
<gadget id="calculator">180 * 30</gadget>
<output>5_400</output>

<gadget id="calculator">7_200 - 5_400</gadget>
<output>1_800</output>

<gadget id="calculator">1_800 / 30</gadget>
<output>60</output>

<result>60</result>