There are 75 boys and 87 girls in the third grade. These students went to the nursing home in three batches to help the elderly clean. How many people are there on average in each batch?
三年级共有男生75人，女生87人．这些学生分三批到敬老院帮老人打扫卫生，平均每批有多少人？
<gadget id="calculator">75 + 87</gadget>
<output>162</output>

<gadget id="calculator">162 / 3</gadget>
<output>54</output>

<result>54</result>