Divide a rectangle into 8 parts on average, and 3 of them are the number of this rectangle.
将一个长方形平均分成8分，其中的3份是这个长方形的多少．
<gadget id="calculator">8 / 1</gadget>
<output>8</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<result>3/8 = around 0.375</result>