The car drove from Sheyang to Nanjing, and traveled 195 kilometers in the first 3 hours. At this time, it was still 260 kilometers away from Nanjing. According to this calculation, how many hours did it take for the car to drive from Sheyang to Nanjing? (First answer and then write out the checking process)
汽车从射阳开往南京，前3小时行了195千米，这时离南京还有260千米，照这样计算，这辆汽车从射阳开到南京共有多少小时？(先解答再写出验算过程)
<gadget id="calculator">195 / 3</gadget>
<output>65</output>

<gadget id="calculator">260 / 65</gadget>
<output>4</output>

<gadget id="calculator">4 + 3</gadget>
<output>7</output>

<result>7</result>