Manually calculate the compound interest on a 6.25% annual interest loan of $3,000 for four years if

Question:

Manually calculate the on a 6.25% annual interest loan of $3,000 for four years if interest is compounded annually?
Compound Interest
Compound interest (or compounding interest) is interest calculated on the initial principal, which also includes all of the accumulated interest from previous periods on a deposit or loan. Thought to have originated in 17th century Italy, compound...