The spelling of "farmers billion" can be a bit confusing. In IPA phonetic transcription, it is pronounced as /ˈfɑːrmərz ˈbɪljən/. The word "farmers" is spelled with an "er" at the end, indicating that it is a noun that refers to multiple farmers. The word "billion" is pronounced with an emphasis on the first syllable and is spelled with two "l"s, indicating that it is a large number. So, "farmers billion" refers to an amount of money or resources that is a billion units and is related to or affecting farmers.