Final answer:
The firm's MVA at year-end 2021 is $210,000,000 thousand.
Step-by-step explanation:
The firm's MVA (Market Value Added) at year-end 2021 can be calculated by multiplying the stock price per share by the number of shares outstanding. In this case, the stock price is $21 and the number of shares is 10 million.
Therefore, the firm's MVA at year-end 2021 is $21 per share * 10 million shares = $<<21*10000000=210000000>>210,000,000 thousand.