The unrepaired part of a project is 5 times that of the completed one. If another 60 meters are repaired, the repaired part will be twice the unrepaired part. What is the total length of this project in meters?
一项工程未修的是已修的5倍，若再修60米，已修的就是未修的2倍，求这项工程的全长是多少米？
<gadget id="calculator">2 * 60</gadget>
<output>120</output>

<gadget id="calculator">60 + 120</gadget>
<output>180</output>

<gadget id="calculator">5 - 2</gadget>
<output>3</output>

<gadget id="calculator">180 / 3</gadget>
<output>60</output>

<gadget id="calculator">6 * 60</gadget>
<output>360</output>

<result>360</result>