## 199. Math Puzzle 12/81

The buddies in the brown coal industry of the GDR want to increase the extraction of raw brown coal to 300 million tons per year by 1990. This will require the opening of 21 new opencast mines.

What will the daily production of raw brown coal in the GDR be in 1990 if mining is carried out every day, including Sundays and holidays? (The result should be rounded to the nearest thousand.)





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