Gen 11:32 – “And the days of Terah were two hundred and five years: and Terah died in Haran.”
Acts 7:4 – “Then came he out of the land of the Chaldaeans, and dwelt in Charran: and from thence, when his father was dead, he removed him into this land, wherein ye now dwell.”
Gen 12:4 – “So Abram departed, as the LORD had spoken unto him; and Lot went with him: and Abram was seventy and five years old when he departed out of Haran.”
1870.0 + 204.5 – 74.5 = 2000 AH.