I'm looking at the "2024 Federal Tax Return Summary" on the top sheet of my (now filed) 2024 Federal Return. TT lists my AGI, then my Taxable Income. The sixth data point is Effective Tax Rate. I have always thought that Effective Tax Rate would be (Total Tax/Taxable Income) but the rate on my Summary is clearly not calculated that way. What two numbers does TT use to calculate Effective Tax Rate?