777 Heure Tory

"A classic math puzzle game. The mind card puzzle game can help people improve their arithmetic skills and train sharp thinking. The puzzles vary from the simplest to the most difficult.

Use all 4 number cards to make 24. You can use addition, subtraction, multiplication and division. If these 4 numbers are 2048, then the solution is (2 + 0) × (4 + 8) = 24. Seems simple enough, but what about the 5551? Can you find 24 using these 4 numbers? "