Can you make 142?

Numbers given: 2,9,1,7,2,7,5

Using any combination the numbers above and any operations, get the total to be 142.

You need to give me at least 4 different ways.

You also need to show me how you know your answer is correct.

Only one answer can only use two steps, all the rest must have at least three steps.

You have to attempt more than just one operation.