This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.

Passage: Indira Gandhi International Airport, situated to the southwest of Delhi, is the main gateway for the city's domestic and international civilian air traffic. In 2012-13, the airport was used by more than 35 million passengers, making it one of the busiest airports in South Asia. Terminal 3, which cost 96.8 billion (US$1.4 billion) to construct between 2007 and 2010, handles an additional 37 million passengers annually. Question: How much money did Terminal 3 of Indira Gandhi International Airport cost to construct?
96.8 billion