Linhai Primary School carried out sports activities. There were 45 people who played ball, 8 people skipped rope than those who played ball, and the number of long-distance runners was three times the number of rope skippers.
临海小学开展体育活动，打球的有45人，跳绳的比打球的少8人，长跑人数是跳绳人数的3倍，长跑的有多少人？
<gadget id="calculator">45 - 8</gadget>
<output>37</output>

<gadget id="calculator">37 * 3</gadget>
<output>111</output>

<result>111</result>