Build a road of 8 kilometers, complete 1 / 3 on the first day, and how many parts of the total length are left?

Build a road of 8 kilometers, complete 1 / 3 on the first day, and how many parts of the total length are left?

Build a road of 8 kilometers, complete 1 / 3 on the first day, and the remaining 2 / 3 of the total length