Question 4) 7 years ago, a firm purchased machinery for $250 million. The machinery is being depreciated straightline over a 20 year period. Today, 7 years after the machinery was purchased, the firm sold the machinery for a price of $175 million. The firm's tax rate is 20%. What is the total cash flow from investments that the firm will realize as a result of this sale of equipment? Round all intermediate calculations to 6 decimal points. Your final answer should be within $100 of the correct answer choice. 1) $155 million 2) $162.5 million 3) $175 million 4) $172.5 million