AceShowbiz -

Kevin Federline has reached some progress. The husband of pop superstar Britney Spears is pulling his own weight in his marriage to the singer. Well, at least for now on.

The so-called K-Fed has reportedly earned $700,000 in the last four months, such amount of money that is quite big for the former back-up dancer.

Questioning on how does he get the money, it is said that the man has been earning extra cash by charging to show up at soirees; his fee for a cameo, according to In Touch Weekly, is a whopping $20,000.

Still according to the same publication, K-Fed's other paying gigs include an estimated $250,000 for endorsing clothing line Blue Marlin and $25,000 per day to hawk such products as Virgin Mobile cell phones. Besides, he's negotiating to sign a deal with Jive Records for $300,000 per album, and he also hopes to bring out his own line of jeans and beach jewelry.