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Mathematics in the fifth grade of Beijing Normal University is fun.
1. The farm tool factory wanted to produce 20,640 small farm tools, and 120 was half finished. How many pieces are produced on average every day?

A shoe factory produced 3860 pairs of men's shoes, twice as many as women's shoes. How many pairs of women's shoes were produced?

3. To build the canal, 840m has been built, and120m has not been built. How many times have you repaired it?

4.38 militiamen practiced shooting, and one hit the ring of 1026. How many times did each militia fight on average?

The railway from Nanjing to Jinan is 540 kilometers long. A train leaves from Nanjing and arrives in 9 hours. How many kilometers does this train travel per hour on average?

6. In the feeding group, 64 white rabbits were raised, which was four times that of gray rabbits. How many gray rabbits have you raised?