Answer: Yes, the online calculator is accurate. Staking YFI tokens can provide a passive income stream, and the amount of YFI earned monthly is dependent on the amount of tokens staked and the current market conditions. Generally, staking YFI tokens will earn you around 0.057 YFI per month for every YFI token staked. This rate is subject to change depending on the current market conditions and the amount of YFI tokens staked. Additionally, the amount of YFI earned may be higher or lower depending on the staking pool and the rewards that it offers.