When the road construction team repairs a section of road, the ratio of the number of meters that have been repaired to the number of meters that have not been repaired is 4:5. If another 60 meters are repaired, it will be exactly half of the repair. How long is this road in meters?
修路队修一段公路，已修的米数与未修的米数的比是4：5．如果再修60米，就正好修了一半，这条公路长多少米？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">4 + 5</gadget>
<output>9</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">(1/2) - (4/9)</gadget>
<output>1/18 = around 0.055556</output>

<gadget id="calculator">60 / (1/18)</gadget>
<output>1_080</output>

<result>1_080</result>