What's 24 o'clock for three fives?

What's 24 o'clock for three fives?

5. 5, 5 and 1
（5 - 1÷5）×5
= 4.8×5
= 24

Three five, one one one, how to make 24 points?
How to get 24 from three 5's and one 1's by four operations of addition, subtraction, multiplication and division and brackets? (each number can only be used once)

1:5 × (5 - 1 ÷ 5)
2:5 × (5 - (1 ÷ 5))
3:5 × (5 - 1 ÷ 5 )
4:5 × (5 - (1 ÷ 5 ))
5:(5 - 1 ÷ 5 ) × 5
6:(5 - (1 ÷ 5 )) × 5
7:(5 - 1 ÷ 5) × 5
8:(5 - (1 ÷ 5)) × 5
9:5 × (5 - 1 ÷ 5)
10:5 × (5 - (1 ÷ 5))
11:(5 - 1 ÷ 5) × 5
12:(5 - (1 ÷ 5)) × 5