Could you solve/fill the blank? Thanks a lot

Abby purchased 100 shares of her father's favorite stock for $27 per share exactly 1 year ago, commission free. She sold it today for a total amount of $3125. She plans to invest the entire amount in a different corporation's stock today, but she must now pay a $30 commission fee. If she plans to sell this new stock exactly 1 year from now and realize the same return as she has just made, what must be the total amount she receives next year? Include the commission fee as a part of the purchase price, but neglect any tax effects. The total amount that she receives next year is $ D . RKI Instruments borrowed $4,150,000 from a private equity firm for expansion of its facility for manufacturing carbon monoxide monitors. The company repaid the loan after 1 year with a single payment of $5,325,000. What was the interest rate on the loan? The interest rate on the loan was r year