George and Nancy are married and will file jointly. Nancy generates $$300,000$ of qualified business income from her single member LLC $($a law firm$).$ She reports her business as a sole proprietorship. Wages paid by the law firm amount to $$40,000$; the law firm has no significant property. George is employed as a tax manager by a local CPA firm. Their modified taxable income is $$424,200($this is also their taxable income before the deduction for qualified business

income$).$

a$.$ What is their tentative QBI based on the W$2$ Wages$/$Capital Investment Limit? $[$

b$.$ Determine their allowable QBI deduction for $2023.$