A pair of Go is 42 yuan, the price of a pair of Army Chess is that of Go (3/14), and a pair of Chinese Chess is more expensive than Army Chess (8/9). How much is a pair of Chinese chess?
一副围棋42元，一副军棋的价格是围棋的(3/14)，一副中国象棋比军棋贵(8/9)．一副中国象棋多少元？
<gadget id="calculator">3 / 14</gadget>
<output>3/14 = around 0.214286</output>

<gadget id="calculator">8 / 9</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">1 + (8/9)</gadget>
<output>17/9 = around 1.888889</output>

<gadget id="calculator">42 * (3/14) * (17/9)</gadget>
<output>17</output>

<result>17</result>