Question: What was the estimated budget of the upcoming 2018 film in which Sanchana Natarajan has a small role?  

Context paragraphs:
Aschhe Abar Shabor: Aschhe Abar Shabor (Bengali: আসছে আবার শবর ; ) is an upcoming 2018 Indian Bengali-language crime thriller film directed by Arindam Sil.  It is the sequel to 2016 film "Eagoler Chokh" and the third installment of "Goenda Shabor" film series.  The film is scheduled to release in January 2018.  The film is based on a story "Prajapatir Mrityu O Punorjanmo", written by Shirshendu Mukhopadhyay.

Adam Robitel: Adam Robitel (born May 28, 1978) is an American film director, producer, screenwriter, and actor.  He directed 2014's "The Taking of Deborah Logan", was the co-writer for the 2015 film "", and is also the director for the upcoming 2018 film "".

Patna International Convention Centre: The Samrat Ashok Convention Centre is an upcoming convention centre on North Gandhi Maidan Marg, Patna, Bihar with an estimated budget of 490 crore.  The foundation stone of the centre was laid by Nitish Kumar, the chief minister of Bihar on 8 February 2014.  An expected, around 16,500 metric tonnes of iron would be used in construction, which is more than the volume of steel used in raising Eiffel Tower and Indira Gandhi International Airport, New Delhi.  The capacity of the main auditorium will be around 5000.  The centre is expected to be completed by April 2017 and will have several GYAN BHAWAN, Multipurpose Hall, Plenary Hall, Modular Meeting Rooms with Basement Parking, Sabhyta Park With Sabhyata Dwar & food plaza.

2.0 (film): 2.0 is an upcoming Indian science fiction film written and directed by S. Shankar, co-written by B. Jeyamohan, and produced by Subaskaran Allirajah, founder of Lyca Productions.  The film serves as a sequel to the 2010 Tamil film "Enthiran," and features Rajinikanth reprising the roles of Dr. Vaseegaran and Chitti, alongside Akshay Kumar and Amy Jackson.  The film will be released simultaneously in Tamil and Hindi.  With an estimated budget of 450 crore (4.5 billion), it is the most expensive Indian film made to date.  A dubbed version in Telugu will release alongside the original Tamil and Hindi versions.The film is expected to be released worldwide on 25 January 2018.

Gulebakavali (2017 film): Gulebakavali(English: The Flower of Bakavali) is an upcoming Tamil action comedy film, written and directed by and produced by KJR Studios.  Prabhu Deva and Hansika Motwani are playing the lead pair in this movie with veteran actress Revathi playing a supporting role.  A song has been shot in Chennai with an estimated budget of 2 crores featuring the lead pair.

Viraat Ramayan Mandir: Viraat Ramayan Mandir is an upcoming Hindu temple complex in Kesaria, Bihar, India, with an estimated budget of () .  When completed, it will be the largest religious monument in the world.  The Virat Ramayan Mandir will be almost double the height of the world-famous 12th century Angkor Wat temple complex in Cambodia, which is 215 feet high.  The temple will have a hall with a seating capacity of 20,000 people.  The construction of the temple is scheduled to start in June 2015, but has since been delayed following the Cambodia government's protest to the government of India.

Oceanus: Act One: Oceanus: Act One is a 2015 Adventure, Sci-Fi short film which is a prequel to the upcoming 2018 film created by Jeffrey Morris.

Deanna Dunagan: Deanna Dunagan (born May 25, 1928) is a Chicago-based American actress.  Although Dunagan has appeared on television and in films, she is most admired for her work as a stage actress.  She is best known for her Tony Award-winning portrayal of Violet Weston in Tracy Letts' "" and for her portrayal of Nana in M. Night Shyamalan's 2015 film "The Visit".  More recently she has appeared in the recurring role of Mother Bernadette on the Fox television series "The Exorcist".  She portrays Dr. Willa Sipe in the upcoming 2018 film "The Pages" by writer Joe Chappelle.

Extinction (2018 film): Extinction is an upcoming 2018 American science-fiction thriller film directed by Ben Young and written by Spenser Cohen, Eric Heisserer and Brad Kane.  The film is about a father suffers from a recurring dream about the loss of his family while witnessing the force bent on destruction.  The film stars Lizzy Caplan, Michael Peña, Mike Colter, Lilly Aspell, Emma Booth, Israel Broussard and Lex Shrapnel.  The film is scheduled to be released on January 26, 2018.  This was Mandeville Films' first film to be distributed under the Universal Pictures banner.

Sanchana Natarajan: Sanchana Natarajan is an Indian model and actress who has appeared in Tamil and Telugu films.  Having appeared in small roles in films including "Irudhi Suttru" (2016) and "2.0" (2018), Sanchana rose to fame with her role in Balaji Mohan's web series "As I'm Suffering From Kadhal" (2017).

Supporting paragraphs: Sanchana Natarajan 2.0 (film)
Answer: 450 crore (4.5 billion)