How fast do earthworms grow?

Earthworms grow atleast 2 inches a day. Earthworms are one of the most living creatures on earth. Earthworms are very rare even though people use them sometimes as bait for fishing or sometimes if they have nothing to eat they will eat earthworms. Earthworms been on earth for more then 1000 years...
they live toabout 2 years
a 10 ft. long earthworm has been discovered.