The price of a chair is 68 yuan, and the price of a table is 20 yuan less than three times that of a chair. How much is a table?
一把椅子的售价为68元，一张桌子的售价比一把椅子的3倍少20元，一张桌子多少元？
<gadget id="calculator">68 * 3</gadget>
<output>204</output>

<gadget id="calculator">204 - 20</gadget>
<output>184</output>

<result>184</result>