The price of a set of desks and chairs is 48 yuan, and the price of the chairs is that of the desks (5/7). How much is the price of the chair?
一套课桌椅的价格是48元，其中椅子的价格是课桌的(5/7)．椅子的价格是多少元？
<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">1 + (5/7)</gadget>
<output>12/7 = around 1.714286</output>

<gadget id="calculator">48 / (12/7)</gadget>
<output>28</output>

<gadget id="calculator">48 - 28</gadget>
<output>20</output>

<result>20</result>