A basket of apples, A takes half and then another; B takes the remaining half and two; How many apples are there in the original box?
一筐苹果，甲拿了一半后又拿了一个；乙拿了剩下的一半又拿了两个；丙拿了再剩下的一半再加3个，最后这筐苹果还剩4个．问原来框里有多少个苹果？
<gadget id="calculator">4 + 3</gadget>
<output>7</output>

<gadget id="calculator">7 * 2</gadget>
<output>14</output>

<gadget id="calculator">14 + 2</gadget>
<output>16</output>

<gadget id="calculator">16 * 2</gadget>
<output>32</output>

<gadget id="calculator">32 + 1</gadget>
<output>33</output>

<gadget id="calculator">33 * 2</gadget>
<output>66</output>

<result>66</result>