Rebecca and Brad are married and will file jointly. Rebecca earns $300,000 from her single-member LLC (a law firm). She reports her business as a sole proprietorship. Wages paid by the law firm amount to $40,000; the law firm has no significant property. Brad is employed as a tax manager by a local CPA firm. Their modified taxable income is $386,600 (this is also their taxable income before the deduction for qualified business income). Determine their QBI deduction for 2020