Yes, it's a math problem. First think of how many ways the vowels can be in order. IAE, IEA, AIE, AEI, EIA, EAI = 6. That was more easily solved as 3! = 6.
Then consider the vowels as one "letter," which we'll call V. So now you have the letters D, S, T, N C, and V, or 6 letters, they can be arranged 6! different ways, or 720 ways. Mutliple the number of ways you can combine the vowels (6) by the number of ways you can combined the rest, and you have 4,320.
Next time, please limit your question to English, okay?