An entire lifetime for some people. It all depends on how hard you're willing to work and how much you choose to contribute.
It takes one week to make jelly-beans! A whole week!
So it could take a year or a couple of mounths or week depending how long you take on it.
2 seconds
About 1,600 years
3 days
I just did! So long...
What is meaningful for one firm may be routine in another. If asked this question, you should ask for clarification. There is nothing wrong with asking an interviewer to what type of meaningful contribution they are referring.
how long does it take to make a crayons
As long as you make it take.
How long did it take Galileo to make the first telescope?
how long did it take Alfred Nobel to make dynmite
how long did it take colonial chandlers to make candles
not to long.
long enough to make you talk.
It takes one week to make jelly-beans! A whole week!
The A has a long sound as in bake, cake, and take.
it take 5 hours to make a stapler