There are 80 peach trees in the orchard, which are apple trees (4/5), and apple trees are pear trees (2/3), how many pear trees are there?
果园里有桃树80棵，是苹果树的(4/5)，苹果树是梨树的(2/3)，梨树有多少棵？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">80 / (4/5) / (2/3)</gadget>
<output>150</output>

<result>150</result>