There are a total of 800 apple trees and pear trees in the orchard, of which apple trees accounted for 60%. Later, some apple trees were planted, so that apple trees accounted for 68% of the total. How many apple trees were planted later?
果园里有苹果树、梨树一共800棵，其中苹果树占60%，后来又栽了一些苹果树，这样苹果树占总数的68%，后来又栽了多少棵苹果树？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">68 / 100</gadget>
<output>17/25 = around 0.68</output>

<gadget id="calculator">1 - (17/25)</gadget>
<output>8/25 = around 0.32</output>

<gadget id="calculator">(2/5) / (8/25)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">800 * (5/4)</gadget>
<output>1_000</output>

<gadget id="calculator">1_000 - 800</gadget>
<output>200</output>

<result>200</result>