From the details provided in the question, the principal amount invested (deposited) is 650. The annual rate of interest is 6.2% (that is 0.062), and the duration which is time in years is 5. The simple interest formula is given as;
If the amount deposited now yields an interest of 201.5 after 5 years, then the amount in Katie's account would be;
After 5 years, Katie is going to have $851.5 in her bank account