The conversation between human and AI assistant.
[|Human|] From the passage provided,  extract the cost of building Taj Mahal
[|AI|] The Taj Mahal complex is believed to have been completed in its entirety in 1653 at a cost estimated at the time to be around â¹32 million, which in 2020 would be approximately â¹70 billion (about US $1 billion)
[|Human|] 
From the passage provided,  extract the cost of building Taj Mahal