The distance between the two cities is 520 kilometers, and the long-distance bus traveled 195 kilometers in the first 3 hours. According to this speed, how many hours will it take for the whole journey?
两城之间的距离是520千米，长途客车前3小时行了195千米，按照这样的速度，全程需要多少小时？
<gadget id="calculator">195 / 3</gadget>
<output>65</output>

<gadget id="calculator">520 / 65</gadget>
<output>8</output>

<result>8</result>