inaya corporation has net cash flow from financing activities for the last year of $45 million. the company paid $200 million in dividends last year. during the year, the change in notes payable on the balance sheet was $50 million and change in common and preferred stock was $0. the end-of-year balance for long-term debt was $375 million. calculate the beginning-of-year balance for long-term debt. (enter your answer in millions of dollars.)