P16813 [Lanqiao Cup 2026 National Python B] Average Age

In $2026$, the company founded by Xiao Lan has entered a mature stage of steady development. The company currently has $300$ employees, and the average age of the employees is $37$. Looking back $21$ years ago (that is, in $2005$), at the beginning of the company, there were only $50$ employees in the whole company, and the average age at that time was $26$. Over the following $21$ years, these $50$ founding members have stayed in their positions, and none of them has left. Meanwhile, the company has gradually recruited $250$ new members. Now, in order to better plan the talent pipeline, Xiao Lan needs to calculate what the current average age of these $250$ new employees is. Please help him complete the calculation.

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This is an output-only fill-in-the-blank problem. You only need to calculate the result and submit it. The result of this problem is an integer. When submitting the answer, you only need to write a program that outputs this integer. Any extra content will cause you to get no points.

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