How do u express each fraction as a decimal ,what is 7/16 has a decimal and can u show me how u did the problem, i'm in the 6 grade so go easy on me

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field