There are 140 apple trees and pear trees in the orchard of Uncle Li’s family. The number of apple trees is 3/4 that of pear trees. How many pear trees are there?
李叔叔家的果园里有苹果树和梨树140棵，苹果树的棵数是梨树的(3/4)，梨树有多少棵？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 + (3/4)</gadget>
<output>7/4 = around 1.75</output>

<gadget id="calculator">140 / (7/4)</gadget>
<output>80</output>

<result>80</result>