Convert US beer barrel to US fluid ounce
Unit definitions
US beer barrel
The US beer barrel is defined as exactly $31$ US liquid gallons.
US fluid ounce
$\frac{1}{128}$ of a US liquid gallon is a US fluid ounce.
How to convert US beer barrel to US fluid ounce
$$\text{Volume}_{\text{oz (us)}} = \text{Volume}_{\text{bbl (beer)}} \cdot 3968$$
Examples
Example 1
Convert $25.0\ \text{bbl (beer)}$ to $\text{oz (us)}$.
$$\text{Volume}_{\text{oz (us)}} = 25.0 \cdot 3968$$
$$\text{Volume}_{\text{oz (us)}} = 99200$$
$$\therefore \ 25.0\ \text{bbl (beer)} = 99200 \ \text{oz (us)}$$
Example 2
Convert $75.0\ \text{bbl (beer)}$ to $\text{oz (us)}$.
$$\text{Volume}_{\text{oz (us)}} = 75.0 \cdot 3968$$
$$\text{Volume}_{\text{oz (us)}} = 297600$$
$$\therefore \ 75.0\ \text{bbl (beer)} = 297600 \ \text{oz (us)}$$
Example 3
Convert $120.0\ \text{bbl (beer)}$ to $\text{oz (us)}$.
$$\text{Volume}_{\text{oz (us)}} = 120.0 \cdot 3968$$
$$\text{Volume}_{\text{oz (us)}} = 476160$$
$$\therefore \ 120.0\ \text{bbl (beer)} = 476160 \ \text{oz (us)}$$
Example 4
Convert $135.0\ \text{bbl (beer)}$ to $\text{oz (us)}$.
$$\text{Volume}_{\text{oz (us)}} = 135.0 \cdot 3968$$
$$\text{Volume}_{\text{oz (us)}} = 535680$$
$$\therefore \ 135.0\ \text{bbl (beer)} = 535680 \ \text{oz (us)}$$
Example 5
Convert $185.0\ \text{bbl (beer)}$ to $\text{oz (us)}$.
$$\text{Volume}_{\text{oz (us)}} = 185.0 \cdot 3968$$
$$\text{Volume}_{\text{oz (us)}} = 734080$$
$$\therefore \ 185.0\ \text{bbl (beer)} = 734080 \ \text{oz (us)}$$