car pays 60 yuan for refueling, and has traveled 420 kilometers. Now it is going to pick up a batch of goods from a 700-kilometer base. How much gasoline will it cost?
一辆汽车一次加油支付60元，行驶了420千米，现在要去700千米的基地接运一批货物回来，需支付多少汽油费？
<gadget id="calculator">60 / 420</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">(1/7) * 700 * 2</gadget>
<output>200</output>

<result>200</result>