Damage formula, HELP

Different websites provide different formulas, and the GPT chat provided three options for calculating damage.

Base damage: 1273
Attack damage: +185%
More attack damage: +85%

1. 1273 * 3.70 = 4710.1

2. 1273 * 2.85 ≈ 3625.05
3625.05 * 1.85 ≈ 6716.34

3. 1273×1.85×1.85=1273×3.4225=4359.97

Which one is correct? I wrote to you by email, but they told me they couldn't help with this. Please help someone or DEVS!