Hi,
I know the academic answer concerning the difference between American and British usage as far as 'billion' is concerned. But let's put the old books aside. I'm interested in REAL usage or meaning, like in this article found at random by Google:
http://www.christianaid.org.uk/news/media/pressrel/031023p.htm . I chose this, as it has "uk" in its address, so, I presume, the usage should be British. So, if anyone from Great Britain sees " billion" in the newspaper and has to write the amount in numbers for the inquisitive little grandson, what would she/he actually write?
Now, I noticed that it is not the best example, as grandma or grandpa could be inclined to stick to tradition. So, let's assume this is a British yuppie who has to do the same task for his perplexed girlfriend from Russia

Thank you in advance
R