Add spaces: AccordingtoStatisticsDenmark,in2010therewere17,300internationalswithastudycardinDenmark.

Answer: According to Statistics Denmark, in 2010 there were 17,300 internationals with a study card in Denmark.

Add spaces: Containingbyweight8%ormoreofnickel72042110

Answer: Containing by weight 8 % or more of nickel 7204 21 10

Add spaces: Theheightcomesfastfastwhenplayershitahotknittingandgainsstacksup.

Answer:
The height comes fast fast when players hit a hot knitting and gains stacks up.