Shakuntala Devi trailer: Vidya Balan is impressive as the 'human computer'

Vidya Balan will soon be seen in the avatar of India's math genius, popularly known as the 'human computer'. Yes, we're talking about none other than the incredible Shakuntala Devi and Balan's upcoming film is based on her.

The makers of Shakuntala Devi just dropped the trailer of the film and it looks quite exciting! Starring...