The bottles will be filled by $\displaystyle{96}\cdot{16}={1},{536}\usepackage{cmbright}\Huge\$ fluid ounces. Converting ounces to gallons:

$\displaystyle\frac{{{1536}\ \text{ fl oz}}}{{1}}\cdot\frac{{{1}\ \text{ cup}}}{{{8}\ \text{ fl oz}}}\cdot\frac{{{1}\ \text{ gallon}}}{{{16}\ \text{ cups}}}={12}\ \text{ gallons}\usepackage{cmbright}\Huge\$