Uncle Wang stocked silver carp fry and crucian carp fry in the fish pond. There are 280 silver carp fry, and crucian carp fry account for 65% of the total fry. Do you know how many fry Uncle Wang stocked in the fish pond?
王大伯在鱼塘里放养了鲢鱼苗和鲫鱼苗这两种鱼苗，鲢鱼苗有280尾，鲫鱼苗占鱼苗总数的65%，你知道王大伯在鱼塘里一共放养了多少尾鱼苗吗？
<gadget id="calculator">65 / 100</gadget>
<output>13/20 = around 0.65</output>

<gadget id="calculator">1 - (13/20)</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">280 / (7/20)</gadget>
<output>800</output>

<result>800</result>