Its 9k cost to employer. Its 6.5k gross salary which translates to 78k gross salary a year for the employee. A lot of engineers make that salary.
If you are receiving money as a freelancer you need to earn at least 50% more to get a similar net salary as an employee therefore a employee salary of 78k gross is roughly equal to a freelancer making 120k a year.
You have to compare net income as everything else does not make sense.