Financial information for Powell Panther Corporation is shown below:

Powell Panther Corporation: Income Statements for Year Ending December 31 (millions of dollars)

	2021		2020
Sales	$	2,750.0	$	2,500.0
Operating costs excluding depreciation and amortization		2,200.0		2,125.0
EBITDA	$	550.0	$	375.0
Depreciation and amortization		81.0		70.0
Earnings before interest and taxes (EBIT)	$	469.0	$	305.0
Interest		60.5		55.0
Earnings before taxes (EBT)	$	408.5	$	250.0
Taxes (25%)		163.4		100.0
Net income	$	245.1	$	150.0
Common dividends	$	220.6	$	120.0

Powell Panther Corporation: Balance Sheets as of December 31 (millions of dollars)

	2021		2020
Assets
Cash and equivalents	$	46.0	$	35.0
Accounts receivable		390.0		300.0
Inventories		500.0		400.0
Total current assets	$	936.0	$	735.0
Net plant and equipment		805.0		700.0
Total assets	$	1,741.0	$	1,435.0
Liabilities and Equity
Accounts payable	$	248.0	$	225.0
Accruals		130.0		100.0
Notes payable		55.0		50.0
Total current liabilities	$	433.0	$	375.0
Long-term bonds		550.0		500.0
Total liabilities	$	983.0	$	875.0
Common stock		688.5		515.0
Retained earnings		69.5		45.0
Common equity	$	758.0	$	560.0
Total liabilities and equity	$	1,741.0	$	1,435.0

Write out your answers completely. For example, 25 million should be entered as 25,000,000. Round your answers to the nearest dollar, if necessary. Negative values, if any, should be indicated by a minus sign.

1. What was net operating working capital for 2020 and 2021? Assume the firm has no excess cash.

   2020: $

   2021: $

2. What was the 2021 free cash flow?