Massachusetts Taxable IRA distributions (RMD)

Decades ago when I left a company, I rolled over my 401K into two IRA mutual funds. Through the years, I have not contributed to any IRA, and both mutual funds have made gains.

 

I withdrew my first RMD from one of the two mutual funds in 2019, including for 2018.

 

I'm filing the 2020 return, what should I enter for "Other Contributions Previously Taxed by Massachusetts", and for "Total Distributions Received in Previous Years"?

 

Thanks.