Hello P.Motzek,
It's radicalb21. First let me welcome you to the forum. To answer your question simply and easily NO you cannot use the avast! 4 Home Edition on 40 or so computers for a local government in another country. Here is the answer in print from the avast website:
avast! Home is now free of charge for HOME users for NON-COMMERCIAL use. You can find more info here. If you are not a home user or you use your computer for profit, you should buy the commercial version here.
I am an avast reseller in the USA. You can go to my website at
www.v1ru5help.org and if you are interested in buying you can contact me through v1ru5sales@v1ru5help.org. Hope this answers your question.