There is a basket of peaches, half of which is eaten the first time and one is missing, and the remaining half is eaten the second time, leaving 3 peaches. How many apples are there in this basket?
有一筐桃，第一次吃去一半少1个，第二次又吃去余下的一半，还剩3个．原来这一筐苹果有多少个？
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<result>10</result>