A 20-meter-long wire used up 5.26 meters for the first time, and the same amount was used for the second time, and the wire happened to be used up for the third time. How many meters did it use for the third time?
一根20米长的电线，第一次用了5.26米，第二次用的与第一次同样多，第三次恰巧把这根电线用完，第三次用了多少米？
<gadget id="calculator">20 - 5.26 - 5.26</gadget>
<output>9.48</output>

<result>9.48</result>