Honglin Nursery has 350 cypress trees, the number of cypress trees is 1/2 that of pine trees, and the number of camphor trees is 5/7 that of pine trees. How many camphor trees are there?
洪林苗圃有柏树350棵，柏树的棵数是松树的(1/2)，香樟树的棵数是松树的(5/7)．香樟树有多少棵？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">350 / (1/2)</gadget>
<output>700</output>

<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">700 * (5/7)</gadget>
<output>500</output>

<result>500</result>