The ratio of pear trees to peach trees in an orchard is 5:7, there are 200 pear trees, how many peach trees are there?
果园梨树与桃树的比是5：7，梨树有200棵，桃树有多少棵？
<gadget id="calculator">200 / 5</gadget>
<output>40</output>

<gadget id="calculator">40 * 7</gadget>
<output>280</output>

<result>280</result>