What is 'On y va pour acheter des timbres' when translated from French to English?

"We're going to buy stamps" is an English equivalent of the French phrase On y va pour acheter des timbres. The declarative statement in the third person singular of the present indicative translates literally into English as "One goes there in order to buy some stamps." The pronunciation will be "o-nee va pooh-rash-tey dey tehmb" in northerly French and "o-nee va pooh-ra-shuh-tey dey tehm-bruh" in southerly French.