There are 30 liters of gasoline in Xiao Wang's car fuel tank. He has traveled 60 kilometers and shared 4 liters of gasoline. According to this calculation, how many kilometers can the remaining gasoline travel?
小王的汽车油箱里有30升汽油．他已经行驶60了千米，共用去4升汽油．照这样计算，剩下的汽油还可以行驶多少千米？
<gadget id="calculator">60 / 4</gadget>
<output>15</output>

<gadget id="calculator">30 - 4</gadget>
<output>26</output>

<gadget id="calculator">15 * 26</gadget>
<output>390</output>

<result>390</result>