Xiao Ming has 4 pieces of chocolate, and eats 2 pieces, which is the original total ((())/(())).
小明有4块巧克力，吃了2块，吃了的是原来总数的((())/(()))．
<gadget id="calculator">2 / 4</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>