Xiaowen eats a birthday cake with her parents. She divides the cake into 8 parts on average, giving it to her father (3/8) and to her mother (2/8). What fraction is left?
小文和爸爸妈妈一起吃生日蛋糕，她把蛋糕平均分成8份，分给爸爸(3/8)，分给妈妈(2/8)，还剩几分之几？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">2 / 8</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (3/8) - (1/4)</gadget>
<output>3/8 = around 0.375</output>

<result>3/8 = around 0.375</result>