The second-grade students bring 208 books, and the third-grade students bring 39 books, three times less than the second-grade students. How many books do the third-grade students bring?
二年级学生自带图书208本，三年级学生带的图书是二年级的3倍少39本，三年级学生带了多少本？
<gadget id="calculator">208 * 3</gadget>
<output>624</output>

<gadget id="calculator">624 - 39</gadget>
<output>585</output>

<result>585</result>