A cake is divided into 4 parts on average, such a part is how much of the whole cake
一个蛋糕平均分成4份，这样的一份是整个蛋糕的多少
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>