Answer:
If you have 558 cheeseburgers and hamburgers, divide the numbers by 2. half of 558 is 279. then if you already know the total all you need to do is subtract 58 to 279 for the hamburgers and add 58 to the cheese burgers.
Making the answer: 221 Hamburgers
and: 337.
How to check my work:
221 + 337 = 558