Definitions of work out:

• verb:   come up with
• verb:   happen in a certain way, leading to, producing, or resulting in a certain outcome, often well
• verb:   be calculated

  Example: "The fees work out to less than $1,000"

• verb:   work out in detail
• verb:   find the solution to (a problem or question) or understand the meaning of

  Example: "Work out your problems with the boss"

• verb:   do physical exercise
• verb:   give a work-out to
• verb:   make a mathematical calculation or computation