There are 400 apple trees in the orchard, which are 1/4 more than pear trees, and the number of persimmon trees is 20% less than that of pear trees. How many persimmon trees are there in the orchard?
果园里有400棵苹果树，比梨树多(1/4)，柿子树的棵数比梨树少20%，果园里柿子树有多少棵？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">400 / (5/4)</gadget>
<output>320</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">320 * (4/5)</gadget>
<output>256</output>

<result>256</result>