Swell Computers is a public company that manufactures desktop and laptop computers. The components of the financial statements are: (1) income before taxes = $500,000, (2) total assets = $2.2 billion, and (3) total revenues = $7 billion. Swell Computers' CPA firm might use the lowest percentage for total assets for determining overall materiality, but they also consider qualitative factors.

a. Determine overall materiality and tolerable misstatement. Justify your decisions.

b. During the course of the audit, Swells CPA firm detected one misstatement that resulted in an overstatement of income by $1.5 million. Evaluate the audit findings. Justify your decisions.