It's the least I can do.
What do you think about" It's the least I can do.
這點小事不算什麼。
Is it too weird for you when someone said this one to you?
If my friend visit to Taiwan, I help the friend to pay the money for street food. Also, the friend has helped me a lot online in improving English.
Could I say" Oh, you helped me a lot. It's the least I can do.
Does it work for you when I use this one?

