Two cars of the same model start from the same place at the same time at the same speed in one direction. They can carry up to 30 barrels of gasoline per year. Each barrel of gasoline can make the car travel 60 kilometers. Each car must return to the starting point. The two cars can borrow fuel from each other. In order to keep one of the cars as far away from the starting point as possible, how far can this car be from the starting point?
两辆同一型号的汽车从同地同时同速沿一个方向出发，每年最多能带30桶汽油，每桶汽油使汽车前进60千米，每车都须返回出发点，两车可以找对方借油，为了使其中一辆车尽可能远离出发点，那么这辆汽车最远能离出发点多少千米？
<gadget id="calculator">30 / 2</gadget>
<output>15</output>

<gadget id="calculator">3 / 1</gadget>
<output>3</output>

<gadget id="calculator">4 / 3</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">60 * 15 * (4/3)</gadget>
<output>1_200</output>

<result>1_200</result>