Divide 36 pens into 9 parts on average, 4 of which are the number of these pens
把36支钢笔平均分成9份，其中4份是这些钢笔的多少
<gadget id="calculator">9 / 1</gadget>
<output>9</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<result>4/9 = around 0.444444</result>