mass percentage of NaOCl is 3.62 %
this means that for every 100 g of bleach solution, the mass of NaOCl is 3.62 g
the mass of bleach solution is 1329.0 g
the mass of NaOCl in the solution is 3.62 % of 1329.0 g
therefore mass of NaOCl - 48.1 g
48.1 g of NaOCl in the bleach solution