You take the dose volume / original volume of the known
Multiply it by the dilted volume (oz cancel out) - leaving the mL dose of the
2mL/3oz x 17oz = 11.3mL
Double check by check by calculating number of doses per bottle:
mL in bottle / dose mL
3 oz = 90 mL / 2ml = 45 doses in the bottle
17oz = 510 mL / 11.3 ml = 45 doses in the bottle
Same number of doses in