The 37 color pens and 40 exercise books were evenly distributed to several children. As a result, there were 2 more color pens and 2 less exercise books. How many children are there?
把37支彩水笔和40个练习本平均分给几个小朋友，结果彩水笔多2支，练习本少2个，有几个小朋友？
<result>7</result>