A fruit weighing 1000 dry grams has a water content of 80%. After a period of drying, the water content becomes 60%. How many kilograms do these fruits weigh at this time?
某种重1000干克的水果的含水量为80%，经过一段时间晾晒后，含水量变为60%，此时这些水果的重量为多少千克？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1_000 * (1/5)</gadget>
<output>200</output>

<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">200 / (2/5)</gadget>
<output>500</output>

<result>500</result>