To a solution formed under the action of 35.7 ml of a solution of sulfuric acid (ω(H2SO4) = 39.2%, ρ(H2SO4) = 1.4 g/cm3) at 8.125 g of zinc, was added 75 g of a solution of barium sulfide (ω(BaS) = 33.8%), the resulting mixture was slightly heated to completion of the reaction. Calculate the mass fraction of substances contained in the solution after the reaction. (Olympiad level chemistry task)