The farmer's uncle bought 5 buckets of fish fry, and each bucket has 640 fry in 4 ponds on average. How many fish fry are there in each pond?
农民伯伯买来了5桶鱼苗，每桶640尾平均放养在4个池塘里，每个池塘有多少尾鱼苗？
<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">640 * (5/4)</gadget>
<output>800</output>

<result>800</result>