Aunt Li sells eggs. The first customer bought half and one more egg, the second customer bought 15, and the third customer bought the last 12. How many eggs did Aunt Li sell in total?
李大妈卖鸡蛋，第一个顾客买了一半还多1个，第二个顾客买了15个，第三个顾客买了最后剩下的12个，李大妈一共卖了多少个鸡蛋？
<gadget id="calculator">15 + 12 + 1</gadget>
<output>28</output>

<gadget id="calculator">28 * 2</gadget>
<output>56</output>

<result>56</result>