An orchard covers an area of 36 hectares, of which (2/9) are planted with apple trees, (1/4) are planted with pear trees, and the rest are planted with peach trees. How many hectares are planted with peach trees?
一个果园占地36公顷，其中(2/9)种苹果树，(1/4)种梨树，其余的种桃树，种桃树的面积是多少公顷？
<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (2/9) - (1/4)</gadget>
<output>19/36 = around 0.527778</output>

<gadget id="calculator">36 * (19/36)</gadget>
<output>19</output>

<result>19</result>