The price of each basketball is 85 yuan, the price of a football is basketball (9/17), the price of a volleyball is football (14/15), how much is a volleyball?
篮球每个售价为85元，一个足球的价格是篮球的(9/17)，一个排球的价格是足球的(14/15)，一个排球多少钱？
<gadget id="calculator">9 / 17</gadget>
<output>9/17 = around 0.529412</output>

<gadget id="calculator">4 / 15</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">85 * (9/17) * (4/15)</gadget>
<output>12</output>

<result>12</result>