A certain farm produced 25 tons of soybeans in 2012. Due to various factors, the production in 2013 was reduced by 15%. How many tons of soybeans were produced in 2013?
某农场2012年产大豆25t，由于多种因素，2013年减产一成五，2013年产大豆多少t．
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 - (3/20)</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">25 * (17/20)</gadget>
<output>85/4 = around 21.25</output>

<result>85/4 = around 21.25</result>