If a city with a population of 50,000 doubles in size every 16 years, what will the population be 32 years from now?

Pretty sure its 200,000 because, 16 goes into 32 twice and its doubles 50,000 every 16 years, so it would be 50,000 multiplied by 4 since it doubles. and that would give you 200,000. (it was hard explaining this)