Half of a bundle of wires is used in the first week, and half of the remaining wires are used in the second week. At this time, there are 45 meters left. How many meters is the bundle of wires originally?
一捆电线，第一周用去一半，第二周又用去剩下电线的一半，这时剩下45米，这捆电线原来有多少米．
<gadget id="calculator">45 * 2 * 2</gadget>
<output>180</output>

<result>180</result>