It means to do things without thinking, and use them when you are done.
Used when two people share something equally (2 1 plus 5)
Used to indicate that someone is doing things quickly (three times five divided by two)
It means about the same time (near ten o'clock)
Used to indicate that someone is planning something.
In the final analysis, it is (99 ratio 1)
When it comes to grasping the big ones (nine times out of ten)
It means that it is not easy to use when it is not easy.
Used to show confidence (as sure as a gun)
Use when the distance is very long (108,000 miles)