Final answer:
Nails grow gradually as new cells are added at the nail bed. It takes many years to grow nails as long as Shridhar Chillal's.
Step-by-step explanation:
Nails are similar to claws in other animals and cover the tips of fingers and toes. As the nail grows, more cells are added at the nail bed, pushing older cells away and making the nail longer. Nails grow at a rate of about a finger's breadth per year, which is approximately 3 mm a month or 1/10 of an inch. Therefore, it would take many years, possibly even decades, to grow nails as long as Shridhar Chillal's.