No. 4 bus runs every 15 minutes. Wang Hong wants to take the bus at 2:10, but it is already 2:18 when he arrives at the station. How many minutes will he have to wait at the station before he can take the next bus?
4路公共汽车每隔15分钟一班，王红想搭乘2时10分那一班，可到达车站时已经2时18分了，他要在车站等多少分钟才可搭乘下一班车．
<gadget id="calculator">15 - 8</gadget>
<output>7</output>

<result>7</result>