A volunteer association in Zhongshan City raised 4,280 yuan in a charity sale, and they wanted to use the money to invite children from 4 orphanages in the city to go out for an outing. The initial budget is 53.5 yuan per child. On average, how many children can each orphanage invite for outings?
中山市某志愿者会在一次义卖活动中筹得善款4280元，他们想利用这笔善款邀请市内4家福利院的孩子出去郊游．初步预算每个孩子需要花费53.5元，平均每个福利院能邀请几个孩子出去郊游？
<gadget id="calculator">4_280 / 53.5 / 4</gadget>
<output>20</output>

<result>20</result>