The number of peach trees in the orchard is (3/5) the number of pear trees and (4/7) that of apple trees. There are 120 pear trees, how many apple trees are there?
果园里桃树棵数是梨树棵数的(3/5)，又是苹果树的(4/7)，梨树有120棵，苹果树有多少棵？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">(3/5) / (4/7)</gadget>
<output>21/20 = around 1.05</output>

<gadget id="calculator">120 * (21/20)</gadget>
<output>126</output>

<result>126</result>