We have to express the number 304,800,400 in standard and expanded form.
The expanded form is shown as a sum of each digit multiplied by its matching place value. Let us express the number in expanded from.
So, 304,800,400 = 
= 
So, this is the expanded form of the given number.
Standard form is a way of writing down very large or very small numbers easily.
The standard from of the number is:
304,800,400 =
.