Xingfu Village harvested 75 tons of rice this year, an increase of 25% compared to last year. How many tons of rice were harvested last year?
幸福村今年收水稻75吨，比去年增产二成五，去年收水稻多少吨？
<gadget id="calculator">25 / 100</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">75 / (5/4)</gadget>
<output>60</output>

<result>60</result>