An orchard harvests 400 tons of apples this year, which is (1/4) more than last year. How many tons of apples were harvested last year?
一个果园，今年收获苹果400吨，比去年多收(1/4)．去年苹果收获多少吨？
<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">400 / (5/4)</gadget>
<output>320</output>

<result>320</result>