求翻译：乙方付清全部房款5年后，有权将所买的住房按市场价格出售，所得增值额的20%归甲方，80%归乙方。是什么意思？

The right to buy housing sold at market prices, the income value added 20% owned by Party A Party B paid in full for paying back the five years after, 80% owned by B.

Party B shall pay all room after 5 years, have the right to buy the sale of housing at market prices, the value-added 20 per cent of the party in the 80 per cent, party b.

After the second party pays in full the complete room funds for 5 years, is authorized housing which will buy according to market price sell, the obtained increment volume 20% will turn over to the party of the first part, 80% will turn over to the second party.

B full House after 5 years, is entitled to buy homes sold at market prices, value-added derived from 20% to party a, 80% b.

正在翻译，请等待...