The capacity of the fuel tank of a car is 60 liters, and the capacity of the fuel tank of a passenger car is twice that of the car. How many liters is the capacity of the fuel tank of the passenger car?
一辆轿车的油箱容量是60升，一辆客车的油箱容量是轿车的2倍，客车的油箱容量是多少升？
<gadget id="calculator">60 * 2</gadget>
<output>120</output>

<result>120</result>