Question About Staking and APY

Hi Guys,

I have a quick question in regards to Staking, specifically how exactly APY is calculated and what interest is earned.

So I am currently tinkering around on Binance and they have some Staking rewards.

For example, I see that I can stake a coin called LPT. It has an estimated APY of 57% with a duration of 15 days.

When I go to Stake, Binance tells me that the Interest is calculated every day and can change.

Now my question is, am I earning a 57% interest every day for 15 days? Or do I get the 57% interest after 15 days?

I think 57% is for one year.