There are 37 students in class one of the fourth grade sorting books, and each person can sort out 2 books per minute on average. How many books can the whole class sort out in half an hour?
四年级一班有37名同学整理图书，平均每分钟每人可以整理2本．全班学生半小时可以整理多少本图书？
<gadget id="calculator">37 * 2 * 30</gadget>
<output>2_220</output>

<result>2_220</result>