Complex sentence: The first single they published was "Etsit muijaa seuraavaa" and put out on October 25 in 2002 and it sold gold in a few days and platinum in 1½ weeks.
Split into simpler sentences: The first single they published was "Etsit muijaa seuraavaa", which was released on October 25,2002. It sold gold in a few days and platinum in 1½ weeks.