It is known that there is a distance of 180 kilometers between Puyang and Zhengzhou. A car has driven 3/4 of the full length from Puyang to Zhengzhou. How far will this car go to reach Zhengzhou?
已知濮阳与郑州相距180千米，一辆汽车从濮阳开往郑州，已经走了全长的(3/4)，这辆汽车还有多远到达郑州？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">180 * (1/4)</gadget>
<output>45</output>

<result>45</result>