car has traveled 180 kilometers from place A to place B, which is 20 kilometers longer than the total length (4/7). How many kilometers is the road between A and B?
一辆汽车从甲地开往乙地，已经行了180千米，比全长的(4/7)还多20千米．甲乙两地之间的公路长多少千米？
<gadget id="calculator">180 - 20</gadget>
<output>160</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">160 / (4/7)</gadget>
<output>280</output>

<result>280</result>