The mooncake is divided into 8 pieces on average, Xiaohong ate 3 pieces, Xiaojun ate 2 pieces, what fraction of the mooncake did they eat together?
一个月饼平均分成8块，小红吃了3块，小军吃了2块，两人共吃了这个月饼的几分之几？
<gadget id="calculator">2 + 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>