From 0.1250 g of the substance contains SiO2, Na2CO3, K2CO3 after treatment with hydrochloric acid and separation of the filtrate from SiO2 was obtained 0.1282 g of a mixture of KCl and NaCl. In this mixture, Cl-titration of 0.1003 n was calculated. 19.7 ml AgNO3 solution. Calculate the mass fraction (%) of SiO2, Na2CO3, K2CO3 in the original mixture