Interesting 'Tube Puzzle'

IT is more than a year since I posted a Tube Puzzle, but I cannot resist printing the following serial number from a Southern train: 78552.

As usual, each number should be used once, and once only, and must be added, subtracted, multiplied or divided to make a balanced equation.

What makes this special is that there is a perfect solution, ie one that uses the numbers in the order they appear. 
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My solution: 7 + 8 (÷ 5) = 5 - 2