Megastar Amitabh Bachchan, on completing 47 years in the Indian entertainment world, said he is thankful to Mumbai for giving him all that he has today. Big B on Sunday evening shared a photograph from the 1969 film “Saat Hindustani”, which marked his debut in Bollywood. The film was directed by Khwaja Ahmad Abbas. “Goodness me… 47 years in the industry for me,” the 74-year-old captioned the image.