An aspirin tablet with a mass of 0.5123 (± 0.0003) g is crushed and diluted in a volumetric flask having a volume of 250.0 (± 0.5) mL. Chemical analysis establishes that the solution contains 6.78 (± 0.02) × 10−3 M acetylsalicylic acid (180.158 g/mol). Calculate the % w/w acetylsalicylic acid in the aspirin tablet, with its absolute uncertainty. Round the result to show no insignificant digits. You may assume the molar mass of acetylsalicylic acid is known exactly.