There are 204 people who participate in long-distance running in winter on the playground, and 18 people who do exercises are less than those who run. How many people participate in long-distance running in winter and do exercises on the playground?
操场上参加冬季长跑的人有204人，做操的比跑步的少18人，操场上参加冬季长跑的和做操的一共有多少人？
<result>309</result>