There was an old lady who sold tea eggs. She sold more than half of the tea eggs in the pot for the first time, and bought more than two half of the tea eggs in the pot for the second time. There was still one tea egg in the pot. How many tea eggs are there?
有一个卖茶叶蛋的老太太，第一次卖去锅内茶叶蛋的一半多2个，第二次又买去了一半多2个，锅内还有1个茶叶蛋，这个老太太原来一共有多少个茶叶蛋？
<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">6 + 2</gadget>
<output>8</output>

<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<result>16</result>