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LM5017: Inquiry about Rfb setting while writing LM5017 circuit diagram.

Part Number: LM5017

Hello, I am inquiring because I have a question while writing a circuit diagram using LM5017SDE/NOPE.
There is a difference between the formula in the data sheet and the 'LM5017QuickStartCalculator.xls' file downloaded from the TI home page.
When set to Rfb1=3K, Rfb2=5.1K, the formula on the data sheet indicates that Vout is 3.3075V, but in Excel files, it is calculated as 3.24xxV.
I'm inquiring about the difference.

The input power I want to use is Type 48V, Max80V, and the output voltage is 3.3V (Imax = 0.5A).

If there's anything else I'm missing, I'd appreciate it if you could let me know.