At the beginning of the year, Kanye contributed a piece of land (FMV = $300,000; AB = $200,000) in exchange for a 50% capital and profit (and loss) interest in KW Partnership. KW reported the following income and expenses for the current tax year:

• Sales revenue: $700,000
• 1231 gain: $60,000
• Long-term capital loss: $10,000
• Qualified dividends: $10,000
• W-2 wages paid to employees: $200,000
• Utilities: $140,000
• Rent: $180,000        

No distributions were made this year.

What is Kanye’s 704(b) book capital account balance at the end of the tax year?