Primary school mathematics school needs junior high school plus senior high school for 6 years, 12 books. You are smart and diligent, you study every day, one book a month, about a year. The first and second volumes of calculus in advanced mathematics are generally two semesters, linear algebra 1 semester, probability statistics 1 semester, totaling * * * four semesters, and you need one year. Then it was all done, about two years.