South Sea Baubles has the following (incomplete) balance sheet and income statement.

BALANCE SHEET AT END OF YEAR
(Figures in $ millions)
Assets	2018			2019			Liabilities and Shareholders' Equity	2018			2019
Current assets	$	100		$	190		Current liabilities	$	70		$	90
Net fixed assets		900			1,000		Long-term debt		650			850

INCOME STATEMENT, 2019
(Figures in $ millions)
Revenue	$	2,000
Cost of goods sold		1,080
Depreciation		400
Interest expense		250

a&b. What is shareholders equity in 2018 and 2019?

c&d. What is net working capital in 2018 and 2019?

e. What are taxes paid in 2019? Assume the firm pays taxes equal to 21% of taxable income.

f. What is cash provided by operations during 2019?

g. Net fixed assets increased from $900 million to $1,000 million during 2019. What must have been South Seas gross investment in fixed assets during 2019?

Please HELP with question e. and f.