For a basket of apples, half of all apples are taken out for the first time, and 1/2 of the first time is taken out for the second time. What fraction of the apples in the basket is the remaining apples?
一筐苹果，第一次取出全部苹果的一半，第二次取出的是第一次的(1/2)，剩下的苹果是这筐苹果的几分之几？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 * (1/2)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 * (1/2) * (1/2)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/2) + (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>