A road has been repaired (1/3), and another 150 meters have been repaired. At this time, the ratio of the road that has been repaired to the one that has not been repaired is 3:1. How long is this road in meters?
一条路已经修了(1/3)，又修了150米，这时已修的与未修的比是3：1．这条路全长是多少米？
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(3/4) - (1/3)</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">150 / (5/12)</gadget>
<output>360</output>

<result>360</result>