With reference to Exercise 7.59, what is the probability that the car dealer will receive six inquiries

Question:

With reference to Exercise 7.59, what is the probability that the car will receive six inquiries about the 2010 Ford and eight inquiries about the other two cars?
In exercise
In a newspaper ad, a car lists a 2001 Chrysler, a 2010 Ford, and a 2008 Buick. If the numbers of inquiries he will get about these cars may be regarded as independent random variables having Poisson distributions with the parameters λ1 = 3.6, λ2 = 5.8, and λ3 = 4.6
Dealer
A dealer in the securities market is an individual or firm who stands ready and willing to buy a security for its own account (at its bid price) or sell from its own account (at its ask price). A dealer seeks to profit from the spread between the...