A wire, half of which is used for the first time is more than 4 meters, and the remaining half is used for the second time and the remaining half is less than 6 meters. At this time, there are still 20 meters left. How many meters is this wire originally?
一根电线，第一次用去一半多4米，第二次用去剩下的一半少6米，这时还剩20米．这根电线原有多少米？
<gadget id="calculator">20 - 6</gadget>
<output>14</output>

<gadget id="calculator">14 * 2</gadget>
<output>28</output>

<gadget id="calculator">28 + 4</gadget>
<output>32</output>

<gadget id="calculator">32 * 2</gadget>
<output>64</output>

<result>64</result>