During the last year, Tum Biscuit Co. generated $936 million in cash flow from operating activities and had negative cash flow generated from investing activity (-$512 million). At the end of the year, Tum Biscuit Co. had $160 million in cash on its balance sheet, and the firm had $305 million in cash at the end of the second year. What was the firm's cash flow (CF) due to financing activities in the second year?