This year, the village planted 600 trees, which is 1/4 more than last year. How many trees were planted last year?
今年本村种树600棵，比去年多(1/4)去年种树多少棵？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">600 / (5/4)</gadget>
<output>480</output>

<result>480</result>