In analyzing hits by certain bombs in a war, an area was partitioned into 576 regions, each with an area of 0.95 km^2. A total of 515 bombs hit the combined area of 576 regions. Assume that we want to find the probability that a randomly selected region had exactly three hits. In applying the Poisson probability distribution formula, P(x) = (μ^x * e^-μ) / x!, identify the values of μ, x, and e. Also, briefly describe what each of those symbols represents. Identify the values of μ, x, and e. μ = [ ], x = [ ], and e = [ ] (Type integers or decimals rounded to five decimal places as needed.)