One piece of cake Dad ate (3/8) piece of cake, mother ate (1/8) piece of cake. Mom and Dad ate a total of cakes ((())/(())).
一张饼爸爸吃了(3/8)张饼，妈妈吃了(1/8)张饼．爸爸妈妈一共吃了张饼((())/(()))．
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(3/8) + (1/8)</gadget>
<output>1/2 = around 0.5</output>

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