There are 150 peach trees in the orchard. The number of pear trees is (2/3) that of peach trees, and (2/7) of apple trees. How many apple trees are there?
果园里有桃树150棵．梨树的棵数是桃树的(2/3)，又是苹果树的(2/7)．苹果树有多少棵？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">(2/3) / (2/7)</gadget>
<output>7/3 = around 2.333333</output>

<gadget id="calculator">150 * (7/3)</gadget>
<output>350</output>

<result>350</result>