A production team produced 20 tons of soybeans last year. Due to the weather, this year's production has been reduced by about 15%. How many tons of soybeans are produced this year?
某生产队去年产大豆20吨，由于天气原因，今年产量大约减产一成五，今年产大豆多少吨．
<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">20 * (17/20)</gadget>
<output>17</output>

<result>17</result>