There is a basket of pears, A takes half and another, B takes the remaining half and another, C takes the remaining half and another, at this time there is only one pear left in the basket. The total value of this basket of pears is 17.60 yuan. How much is each pear worth?
有一筐梨，甲取一半又一个，乙取余下的一半又一个，丙取再余下的一半又一个，这时筐里只剩下一个梨．这筐梨共值17.60元，每个梨值多少元？
<gadget id="calculator">1 + 1</gadget>
<output>2</output>

<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">4 + 1</gadget>
<output>5</output>

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

<gadget id="calculator">10 + 1</gadget>
<output>11</output>

<gadget id="calculator">11 * 2</gadget>
<output>22</output>

<gadget id="calculator">17.6 / 22</gadget>
<output>0.8</output>

<result>0.8</result>