Calculate a baseball player's batting average. Calculating a baseball player's batting average is not a difficult task at all. A batting average represents the percentage of at bats that result in hits for a particular baseball player. The formula is: That's all there is to it.
To fly under the radar means to act in a way so as to actively avoid detection. It is the opposite of 'in your face'. There is an element of getting away with something but it is not necessarily bad.
This status puts the city on the radar screens of big corporations. Usage notes: often used with words like not, off, and under to mean that something is not considered: The disease is sometimes not even on a doctor's radar screen. Some of these companies operate under everyone's radar.