Lucas and his wife Avery bought an apartment in Sydney for $130,000 on 1 September 2003

Lucas and his wife Avery bought an apartment in Sydney for $130,000 on 1 September 2003. Lucas and Avery used the apartment as their main residence until Lucas received an offer to work in Melbourne. Lucas and Avery left Sydney for Melbourne on 1 September 2014. The apartment was rented out until the apartment was sold on 1 September 2018 for $555,000 to fund the purchase of a new home in Melbourne for $620,000.

Calculate the Capital Gains Tax (CGT) on the sale of Lucas and Avery's apartment. Your answer must include references to relevant Tax Law and / or cases.