The ratio of apple trees to pear trees is 3:4. There are 36 apple trees. How many pear trees are there?
苹果树、梨树棵数的比是3：4，苹果树一共有36棵，梨树有多少棵．
<gadget id="calculator">4 / 3</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">36 * (4/3)</gadget>
<output>48</output>

<result>48</result>