Based on the following.

Net cash flow from operating activities	$318,000
Net cash flow used for investing activities	(30,000)
Net cash flow from financing activities	30,000

Cash flows from operations include $2,000 for depreciation. Cash flows from investing include the purchase of a replacement asset for $100,000 and the sale of the one used in production, which is now obsolete, for $70,000. Cash flows from financing include $70,000 of borrowing.

What is free cash flow?