25 balls are taken out (1/5), how many balls are taken out.
25只皮球取出(1/5)，取出多少只只．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">25 * (1/5)</gadget>
<output>5</output>

<result>5</result>