Cut off half of a piece of iron wire by more than 2 meters, then cut off the remaining half by 1 meter, and finally cut off the remaining half of the iron wire, and the length of the iron wire is only 2 meters. How long is the wire in meters?
一根铁丝截去它的一半多2米，再截去余下的一半少1米，最后把剩下的铁丝又截去一半，铁丝只有2米长了．这根铁丝原来长多少米．
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">4 - 1</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>