Its only one question it was on one of my tests and I wasn't able to figure it out the answer to that question was not on the answer choices so I need to be able to see how it was done so I'm able to see how to do it next time.

Find the operating income for X2 Inc. Sales Revenue: 400,000 units Variable cost: $50 Fixed Cost $6,000,000 Sales price per unit: $60 I need to see what was multiplied or divide so I can be able to learn it this was a test question were the answer was not on the choices given but I still want to be able to know how to do it