Xiaohong and her two classmates have 36, 33 and 48 extracurricular reading materials respectively. How many extracurricular readings do they have on average?
小红和她的两个同学分别有课外读物36本、33本和48本．他们平均每人有多少本课外读物？
<gadget id="calculator">36 + 33 + 48</gadget>
<output>117</output>

<gadget id="calculator">117 / 3</gadget>
<output>39</output>

<result>39</result>