How can I enter the accrual of a small interest converted to Backdoor Roth Ira?

 

Hi, I did a backdoor Roth this year. I contributed $8000 to traditional IRA in my Vanguard account, but while I was waiting for the time that the funds were available to be converted, I ended up accruing a small interest in the tradtional IRA account. the value became $8004.63. As a result, I contributed an additional $4.63 and converted to Roth ($8004.63 in Roth IRA). How do I enter this in my Turbotax? Please guide me step by step, thank you.