5 can also be written as 5/1
knowing that each bottle is equal and is 3/4 full, multiply 5 by 3/4
5/1 x 3/4 will give you your answer.
remember just multiply straight across and simplify.
^ is in the thousadths place so look for the number before it, which is 3. 3 is less than 5 so 6 stays as is so it becomes 1.736