The school bought 560 books and distributed them to the fifth and sixth grade students according to the ratio of 5:9. How many more books will the sixth grade get than the fifth grade?
学校买来560本图书，按5：9的比例分给五、六两个年级的学生阅读，六年级比五年级多分得多少本图书？
<gadget id="calculator">5 + 9</gadget>
<output>14</output>

<gadget id="calculator">9 / 14</gadget>
<output>9/14 = around 0.642857</output>

<gadget id="calculator">5 / 14</gadget>
<output>5/14 = around 0.357143</output>

<gadget id="calculator">(9/14) - (5/14)</gadget>
<output>2/7 = around 0.285714</output>

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

<result>160</result>