How many lentils are there in the jar?
Asking for a development estimation without minimal specification info is like guess how many lentils are there on a jar without even see it,
... offering specification info, then you can see the jar, and you have to guess how many lentils are there in it without open it
... let me the jar, and I’ll keep you informed of how many lentils are there in it as I’m counting them.