There are 7890 black and white hens in the chicken farm. The black hen can lay 1500 eggs per day, and the number of eggs laid by the white hen is twice that of the black hen, which is 2500 less. How many eggs are collected in the chicken farm every day? ?
养鸡场有黑、白母鸡共7890只，黑母鸡每天能下1500个蛋，白母鸡下的蛋数是黑母鸡的2倍少2500个，养鸡场每天共收多少个鸡蛋？
<gadget id="calculator">1_500 * 2</gadget>
<output>3_000</output>

<gadget id="calculator">3_000 - 2_500</gadget>
<output>500</output>

<gadget id="calculator">500 + 1_500</gadget>
<output>2_000</output>

<result>2_000</result>