The road between towns A and B is 180 kilometers long. Xiao Li has driven a car for 20 kilometers and used up 2 liters of gasoline. How many liters of gasoline will be needed for the entire journey?
甲乙两镇之间公路长180千米，小李驾驶汽车已经行驶了20千米共用去2升汽油，照这样计算行驶完全程还需要多少升汽油？
<gadget id="calculator">2 / 20</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">180 - 20</gadget>
<output>160</output>

<gadget id="calculator">(1/10) * 160</gadget>
<output>16</output>

<result>16</result>