When spring comes, the farmer uncle waters the fruit trees. On the first day, I watered all the fruit trees (1/4) in the morning and watered all the fruit trees (3/8) in the afternoon, how many are left unwatered?
春天到了，农民伯伯给果树浇水．第一天上午浇了所有果树的(1/4)，下午浇了所有果树的(3/8)，还剩多少没浇？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">(1/4) + (3/8)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">1 - (5/8)</gadget>
<output>3/8 = around 0.375</output>

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