Chunguang Primary School launched a book donation activity for children in mountainous areas. A total of 560 books were donated. Among them, the number of books donated by the sixth grade students accounted for 2/7 of the whole school. How many books were donated by the sixth grade students?
春光小学开展为山区小朋友赠书的活动，共赠书560本，其中六年级同学赠书的本数占全校的(2/7)，六年级同学一共赠书多少本？
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">560 * (2/7)</gadget>
<output>160</output>

<result>160</result>