Due to the drought, the yield of a corn field has decreased by 15% this year compared to last year, and only 1,700 kilograms of corn were harvested. How many kilograms of corn were produced last year?
一块玉米地，由于干旱，今年比去年减产一成半，只收了1700千克玉米，去年产玉米多少千克？
<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">1_700 / (17/20)</gadget>
<output>2_000</output>

<result>2_000</result>