Complex sentence: In Australia, "Stickwitu" debuted at number three on the Australian ARIA Singles Charts and eventually peaked at number two for two consecutive weeks, and was certified Platinum by ARIA for sales in excess of 70,000.
Split into simpler sentences: In Australia, "Stickwitu" debuted at number three on the official ARIA Singles Chart. It eventually peaked at number two for two consecutive weeks, and was certified Platinum by ARIA for sales in excess of 70,000.