Xiao Li drives a truck to the fruit wholesale market 13.5 kilometers away to transport fruits. The truck travels 6 kilometers and shares 0.4 liters of gasoline. According to this calculation, how many liters of gasoline will be needed for the truck driven by Xiao Li to reach the fruit wholesale market?
小李驾驶一辆货车到相距13.5千米处的水果批发市场运水果．货车行驶6千米共用去0.4升汽油．照这样计算，小李驾驶的这辆货车到达水果批发市场还需要多少升汽油？
<gadget id="calculator">0.4 / 6</gadget>
<output>0.066667</output>

<gadget id="calculator">13.5 - 6</gadget>
<output>7.5</output>

<gadget id="calculator">0.066667 * 7.5</gadget>
<output>0.500003</output>

<result>0.500003</result>