A peasant woman in the farmer’s market sells eggs. She sells half of the total number and 8 eggs for the first time, sells the remaining half and 4 eggs for the second time, and sells the remaining half and 5 eggs for the third time. At this time, there are still 4 eggs left. An egg, and asked the farmer how many eggs she had.
农贸市场一农妇卖鸡蛋，第一次卖出总数的一半零8个，第二次卖出剩余的一半零4个，第三次卖出又剩余的一半零5个，这时还剩下4个鸡蛋，问这农妇原来有鸡蛋多少个．
<gadget id="calculator">4 + 5</gadget>
<output>9</output>

<gadget id="calculator">9 * 2</gadget>
<output>18</output>

<gadget id="calculator">18 + 4</gadget>
<output>22</output>

<gadget id="calculator">22 * 2</gadget>
<output>44</output>

<gadget id="calculator">44 + 8</gadget>
<output>52</output>

<gadget id="calculator">52 * 2</gadget>
<output>104</output>

<result>104</result>