'Scrum Project: calcuate the production time in weeks and the totale cost

Lets say I've a total of 500 story points for the whole project and each story points cost 100 dollar, my velocity is 30 and the time-box of a sprint is 2 weeks.

How do I calculate the production-time in weeks and the total cost?

As the question is stated I need the know the total production-time in weeks, but I don't I how to convert story points into a timescale like days or weeks. Maybe the velocity can help? As I understand the velocity(production-speed) represents the ideal days per day.

Where do I begin to solve this problem?



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