A basketball is 80 yuan, a volleyball is a basketball (3/5), how much is a volleyball.
一个篮球80元，一个排球是一个篮球的(3/5)，一个排球多少元．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">80 * (3/5)</gadget>
<output>48</output>

<result>48</result>