Xiaohong has 10 pieces of chocolate, eats 4 pieces, how much of these chocolates is eaten
小红有10块巧克力，吃掉4块，吃掉了这些巧克力的多少
<gadget id="calculator">4 / 10</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>