Divide a piece of cake into 8 parts on average, Xiaobing ate 3 parts, how much is left
把一块蛋糕平均分成8份，小冰吃了3份，还剩多少
<gadget id="calculator">8 - 3</gadget>
<output>5</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<result>5/8 = around 0.625</result>