There are 60 apple trees, 4 fewer than twice the number of pear trees, how many pear trees are there
苹果树有60棵，比梨树的2倍少4棵，梨树有多少棵
<gadget id="calculator">4 + 60</gadget>
<output>64</output>

<gadget id="calculator">64 / 2</gadget>
<output>32</output>

<result>32</result>