There are 80 pear trees in an orchard, and the ratio of apple trees to pear trees is 5:4. How many apple trees are there?
果园里有梨树80棵，苹果树与梨树棵数的比是5：4．苹果树有多少棵？
<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">80 * (5/4)</gadget>
<output>100</output>

<result>100</result>