The price of a basketball is 100 yuan, the price of a football is 3/4 of a basketball, and the price of a volleyball is 4/5 of a football. How much is a volleyball?
一个篮球的价钱是100元，一个足球的价钱是一个篮球的(3/4)，一个排球的价钱是一个足球的(4/5)，一个排球多少钱？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">100 * (3/4) * (4/5)</gadget>
<output>60</output>

<result>60</result>