Divide a square into 8 parts on average, paint 3 of them red, and how much of the whole square is the red part.
把一个正方形平均分成8份，其中3份涂上红色，红色部分占整个正方形的多少．
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

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