Gaston Corporation made sales of $ 700 million during 2021. Of this amount, Gaston collected cash for $ 630 million. The company's cost of goods sold was $ 310 million, and all other expenses for the year totaled $ 300 million. Also during 2021, Gaston paid $ 360 million for its inventory and $ 280 million for everything else. Beginning cash was $ 85 million. a. How much was Gaston's net income for 2021