How long would it take to finish these courses? I want to know how many hours the videos are in each of the courses.

Algebra 1 -> Geometry -> Algebra 2 -> Trigonometry -> Pre-calculus -> Statistics & Probability -> AP College AB/BC/Statistics -> Multivariate Calculus -> Differential Equations -> Linear Algebra.

Also, is this order correct? I'm trying to catch up on math. It would be greatly appreciated if someone could respond to this.