Write and evaluate the following algebraic expression when n = 4.8. the product of 24 and a number

Which is the correct expression and product?
StartFraction 24 Over n EndFraction; when n = 4.8, the value is 115.2.
StartFraction n Over 24 EndFraction; when n = 4.8, the value is 5.
24 n; when n = 4.8, the value is 115.2.
24 n; when n = 4.8, the value is 5.