Dad drove from home to Huangshan to participate in the self-driving tour. He has already traveled the whole way (1/4), and there is still 180 kilometers away from Huangshan. How many kilometers are there in total from home to Huangshan?
爸爸开车从家到黄山参加自驾游活动，已经行了全程的(1/4)，距离黄山还有180千米，从家到黄山一共有多少千米？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">180 / (3/4)</gadget>
<output>240</output>

<result>240</result>