A grain farmer harvested 48 tons of corn this year, an increase of 20% compared to last year. How many tons of corn was harvested last year?
一个种粮农户，今年收玉米48吨，比去年增产二成，去年收玉米多少吨？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">48 / (6/5)</gadget>
<output>40</output>

<result>40</result>