A certain village produced 40 tons of grain last year, and this year it has increased by 25% compared to last year. How many tons of grain will it produce this year?
某村去年产粮食40吨，今年比去年增产二成五，今年产粮食多少吨？
<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">40 * (5/4)</gadget>
<output>50</output>

<result>50</result>