There are 9 frogs in the pond, 5 of them swim away, how many of them swim away?
池塘里有9只青蛙，游走了5只，游走的占总数的多少
<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<result>5/9 = around 0.555556</result>