WHAT IS THE LAST DIGIT OF 2018 2018 2018 2018 2018 2018 2018 20181...

9. What is the last digit of

2018 2018 2018 2018 2018 2018 2018 2018

12 + 14 + 16 + 18 + 20 + + ... 2014 + 2016 + 2018 ?