1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 × 0 - 2 + 20 =
2 + 1 + 1 + 1 + 1 + 1 + 1 × 0 - 2 + 20 =
3 + 1 + 1 + 1 + 1 + 1 × 0 - 2 + 20 =
4 + 1 + 1 + 1 + 1 × 0 - 2 + 20 =
5 + 1 + 1 + 1 × 0 - 2 + 20 =
6 + 1 + 1 × 0 - 2 + 20 =
7 + 1 × 0 - 2 + 20 =
7 + 0 - 2 + 20 =
7 - 2 + 20 =
5 + 20 = 25