Well, that is the info I found, he is paid $400,000 a year, each quarter he writes check equivalent to one-fourth of his annual salary. Seeing as how the last time I checked there were 4 quarters in a year. 1/4 of 400,000 I think is maybe close to 100,000. Now, reading with an open mind, it did not say he gave 100,000 to each of those charities, it said he gave an amount equivalent to one-fourth of his annual salary to the following federal agencies: and then listed 7 charities. As I read it they all received a share, assuming all shares were equal that would mean each received roughly 14,285. So do you have a different way to mathematically figure that out?