A couple of parents who have 3 children aged 6 years, 3 years, and 1 year intend to create a trust fund for their three children. The fund will provide 25 million rupiah for each child at the time 18 years old and 100 million rupiah at the age of 21 years. If the interest rate the annual effective amount given to the fund is 10%, determine the amount of the fund the guardianship that the children's parents must prepare.