In analyzing hits by certain bombs in a war, an area was partitioned into 551 regions, each with an area of 0.15 km2. A total of 525 bombs hit the combined area of 551 regions. Assume that we want to find the probability that a randomly selected region had exactly two hits. In applying the Poisson probability distribution formula, P(x) = (̔^x * e^-̔) / x!, identify the values of ̔, x, and e. Also, briefly describe what each of those symbols represents. Identify the values of ̔, x, and e. ̔ = , x = , and e = (Type integers or decimals rounded to five decimal places as needed.)