Use reasoning to lead to the answer of the following question:
3000 bees hatch from the queen's eggs every day. If a queen loses 900 bees every day, how many total bees are in the hive (including the queen) at the end of 7 days if at the beginning the queen had 12500 bees?

27201
3000 new bees are born every day.

In 7 days there will be 3000 * 7 = 21000 new bees.

If each day the queen loses 900 bees, in 7 days there will be 900 * 7 = 6300 fewer bees.

If at the beginning the queen had 12500 bees, then at the end of 7 days she will have 12500 + 21000 - 6300 = 27200 bees.

The total number of bees in the hive including the queen is 27200 + 1 = 27201.

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So, the final answer is 27201