Convenience fruit shop sells mangoes, half of the total number of mangoes is sold for the first time, 1 more for the remaining half of the second sale, and 1 less for the remaining half after the second sale. There are only 11 mangoes left. How many mangoes are there in total in the fruit shop?
便民水果店卖芒果，第一次卖掉总数的一半多2个，第二次卖掉剩下的一半多1个，第三次卖掉第二次卖后剩下的一半少1个，这时只剩下11个芒果．求水果店里原来一共有多少个芒果？
<gadget id="calculator">11 - 1</gadget>
<output>10</output>

<gadget id="calculator">10 * 2</gadget>
<output>20</output>

<gadget id="calculator">20 + 1</gadget>
<output>21</output>

<gadget id="calculator">21 * 2</gadget>
<output>42</output>

<gadget id="calculator">42 + 2</gadget>
<output>44</output>

<gadget id="calculator">44 * 2</gadget>
<output>88</output>

<result>88</result>