There are 280 peach trees in the orchard, and there are (4/5) as many peach trees as there are pear trees. How many pear trees are there?
果园有桃树280棵，桃树的(4/5)与梨树同样多．梨树有多少棵？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">200 * (4/5)</gadget>
<output>160</output>

<result>160</result>