You are analyzing the operating cash flow of Microsoft Corporation for the fiscal year ended June 30, 2023. Below is the summarized cash flow statement for the period:

Category	Amount (in billions USD)
Cash flow from operations	$40
Capital expenditures	$10
Dividends paid	$8
Interest paid	$2
Taxes paid	$5

Requirements:

1. Calculate the free cash flow for Microsoft Corporation.
2. Discuss the significance of free cash flow in evaluating Microsoft's financial performance and investment potential.