TurboTax IRA contributed wrks modified adjusted gross income calculation question

This is a question regarding the Roth IRA contribution limit smart worksheet, Line 1 ‘enter your modified adjusted gross income’ -

 

TurboTax automatically calculates/enters the amount of line 1, but it’s not the same amount of the adjusted gross income from 1040 line 11. I’m confused why the amount of line 1 on that worksheet is different from 1040 line 11? How TurboTax calculates it? What is the formula for calculating it?

 

Thanks.