I think that you want to drink nearly 3 litres Sarah. I just did your calculation and got 2859 mls for you (96.7 * 29.5735)ml.
I try to do this every day - and it basically means that I end up drinking 2.5 litres of water.
I have one 1litre bottle and three half litre bottles and I basically fill them up with water each night and put them in the fridge. Then the next day if I drink all my bottles of water I know that I am done. It is easier for me to just round up and drink whole small bottles than mess about trying to measure things.
By the way - congratulation on the new low. The challenge is bringing you luck already!