The school bought 800 exercise books, and (1/5) of them were distributed to 4 classes in the sixth grade. How many books did each class get on average?
学校买来800本练习本，其中的(1/5)分给六年级4个班，平均每个班分到多少本？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) / 4</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">800 * (1/20)</gadget>
<output>40</output>

<result>40</result>