I got 3420 answer but its showing me wrong..

Respond to the following independent situations a. Jacob is a single taxpayer who has net investment income consisting of $16,500 interest on a certificate of deposit, $8,250 from dividends from a mutual fund, $8,250 from capital gain distributions from mutual funds, and $47,000 in long-term capital gains from selling some stocks, and his modified AGI is $190,000. b. Jacob is a single taxpayer who has net investment income consisting of $16,500 interest on a certificate of deposit, $8,250 from dividends from a mutual fund, $8,250 from capital gain distributions from mutual funds, and $47,000 in long-term capital gains from selling some stocks, and his modified AGI is $241,000. c. Jacob is a single taxpayer who has net investment income consisting of $39,000 interest on a certificate of deposit, $19,500 from dividends from a mutual fund, $19,500 from capital gain distributions from mutual funds, and $49,500 in long-term capital gains from selling some stocks, and his modified AGI is $327,500. How much in surtax will Jacob be assessed on his Form 1040 for 2018 Answer is complete but not entirely correct. Amount of surtax a. 1,558 3,420