An exponent is often referred to as a number that is raised to a certain power. The number of the exponent indicates how many times the base is multiplied by itself. For example 6^3 just indicates that we multiply 6 by itself 3 times or 6 x 6 x 6. In this way exponents are really a shorthand form of math. You will find this math at all construction sites. When a building or home is built the number of square feet determines the value of everything.
When an exponent is a negative number the result is always a fraction. The fraction is made up of a numerator equal to one. To determine the denominator we make the negative exponent positive.