James Bond is in trouble. He now has 7 extremely jealous girlfriends. 6 girlfriends are fine, but there is a problematic one that have decided to get rid of him. The agent thinks he now has fantastic girlfriends - when a message arrives. The message was jealously sent by secretary Miss Moneypenny: --- Dear Bond, I know there is not my number within Your heart. From Monday to Sunday You have defined the fixed affairs of Yours... Going straight to the point, You are in danger, since 279999720 has a terrible plan against You. Sorry dear, but You have asked for training math, so I have defined 279999720 by adding up all of the numbers having k digits that are formed by the permutation without repetition using, as digits, the members of the set of natural numbers up to k. Your girlfriend k is Your danger and there is no place for nothing within my naturals. Bye Bond, Moneypenny --- Determine the day of his problematic girlfriend.