The ratio of peach trees to pear trees in the orchard is 5:4, how much peach trees account for the total number of trees of the two kinds of trees.
果园里桃树和梨树棵树的比是5：4，桃树占两种树总棵树的多少．
<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<result>5/9 = around 0.555556</result>