Genesis 5 31
Lamech lived a total of 777 years, and then he died.
Compare with other 3 random translations
EAS Genesis 5:31Lamech was 777 years old when he died.
AMP Genesis 5:31So all the days of Lamech were 777 years, and he died.
CSB Genesis 5:31So Lamech’s life lasted 777 years; then he died.