There are 560 peach and pear trees in the orchard, of which 20 are three times less than the peach trees, how many pear trees are there? (solution with equation)
果园里有桃树和梨树共560棵，其中梨树比桃树的3倍少20棵，梨树有多少棵？(用方程解答)
<gadget id="calculator">20 + 560</gadget>
<output>580</output>

<gadget id="calculator">1 + 3</gadget>
<output>4</output>

<gadget id="calculator">580 / 4</gadget>
<output>145</output>

<gadget id="calculator">560 - 145</gadget>
<output>415</output>

<result>415</result>