There are 280 peach trees in the orchard, which is 1/6 more than pear trees. How many pear trees and peach trees are there altogether?
果园里桃树280棵，比梨树多(1/6)，梨树和桃树共多少棵？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 + (1/6)</gadget>
<output>7/6 = around 1.166667</output>

<gadget id="calculator">280 / (7/6)</gadget>
<output>240</output>

<gadget id="calculator">240 + 280</gadget>
<output>520</output>

<result>520</result>