Hypochlorite content of bleach

[EquusSomnium]

Hi,
I am trying to find out the hypochlorite content of 3 commercial bleaches and I am really stuck. I found this below to help me. The words in red are where I am confused.
Can anyone help?

Moles thiosulfate used = (molarity of thiosulfate)x(volume thiosulfate used)

Mass NaOCl titrated = (moles hypochlorite titrated)x(molar mass NaOCl)
How do I work out the moles of hypochlorite titrated?

Volume of commercial bleach titrated = (volume dilute bleach titrated)x(dilution ratio (10/100))

I used 25 ml of diluted bleach, and it was diluted 1:10, so, do I multiply 25 by 0.1? or do I use the volume in litres?

Mass of commercial bleach titrated = (density of commercial bleach)x(volume of commercial bleach titrated)
How do I calculate the density of the bleach?

% NaOCl in commercial bleach = (mass NaOCl titrated/mass commercial bleach titrated) x 100%

If you can help, please post here or send me an e-mail to [email protected]

Thanks