400 yuan can help one out-of-school child complete his studies, and the donation of five classes in the third grade can just help two out-of-school children. How much is the average donation for each class?
400元可以帮助一名失学儿童完成学业，三年级5个班的捐款正好能帮助2名失学儿童，平均每个班捐了多少元？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">400 * (2/5)</gadget>
<output>160</output>

<result>160</result>