Mom bought 9 pens, gave Xiaodong 5 and Xiaoli 4, and Xiaodong took ((())/(())) of these pens.
妈妈买了9支钢笔，给小冬5支，小立4支，小冬拿了这些钢笔的((())/(()))．
<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

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