Northern Fruits has a line of credit with a local bank that permits it to borrow up to $14 million at any time. The interest rate is 0.39 percent per month. The bank charges compound interest and also requires that 5 percent of the amount borrowed be deposited into a noninterest-bearing account. How much interest will the firm pay if it needs $7 million of cash for three months to pay its operating expenses? Please show calculations.