At the time of his death, Norton was involved in the followi…

At the time of his death, Norton was involved in the following: Owned land in joint tenancy with Emily. The land is worth $600,000 and was purchased by Norton 15 years ago for $150,000.     Owned land in a tenancy by the entirety with his wife Zhi. The land is worth $800,000 and was purchased by Norton five years ago for $450,000.     Owned City of Dayton bonds worth $500,000.       ​What amount is included in Norton’s gross estate?