If there are n numbers greater than 0, their average decimal point will be equal to the sum of these numbers after moving one place. How much is n? In which direction will the decimal point move? What's the formula

If there are n numbers greater than 0, their average decimal point will be equal to the sum of these numbers after moving one place. How much is n? In which direction will the decimal point move? What's the formula

The average of them is m, which is the sum of them
nm=10m
n=10