Convert Liter to US beer barrel
Unit definitions
Liter
The liter is a metric unit of volume equal to $1$ cubic decimeter (i.e., $10^{3}$ cubic centimeters). It is approximately equal to the mass of $1\ \text{kg}$ of water at room temperature.
US beer barrel
The US beer barrel is defined as exactly $31$ US liquid gallons.
How to convert Liter to US beer barrel
$$\text{Volume}_{\text{bbl (beer)}} = \text{Volume}_{\text{l}} \cdot 0.008521679108327368238061287793843952$$
Examples
Example 1
Convert $45.0\ \text{l}$ to $\text{bbl (beer)}$.
$$\text{Volume}_{\text{bbl (beer)}} = 45.0 \cdot 0.008521679108327368238061287793843952$$
$$\text{Volume}_{\text{bbl (beer)}} = 0.383476$$
$$\therefore \ 45.0\ \text{l} = 0.383476 \ \text{bbl (beer)}$$
Example 2
Convert $85.0\ \text{l}$ to $\text{bbl (beer)}$.
$$\text{Volume}_{\text{bbl (beer)}} = 85.0 \cdot 0.008521679108327368238061287793843952$$
$$\text{Volume}_{\text{bbl (beer)}} = 0.724343$$
$$\therefore \ 85.0\ \text{l} = 0.724343 \ \text{bbl (beer)}$$
Example 3
Convert $115.0\ \text{l}$ to $\text{bbl (beer)}$.
$$\text{Volume}_{\text{bbl (beer)}} = 115.0 \cdot 0.008521679108327368238061287793843952$$
$$\text{Volume}_{\text{bbl (beer)}} = 0.979993$$
$$\therefore \ 115.0\ \text{l} = 0.979993 \ \text{bbl (beer)}$$
Example 4
Convert $135.0\ \text{l}$ to $\text{bbl (beer)}$.
$$\text{Volume}_{\text{bbl (beer)}} = 135.0 \cdot 0.008521679108327368238061287793843952$$
$$\text{Volume}_{\text{bbl (beer)}} = 1.150427$$
$$\therefore \ 135.0\ \text{l} = 1.150427 \ \text{bbl (beer)}$$
Example 5
Convert $165.0\ \text{l}$ to $\text{bbl (beer)}$.
$$\text{Volume}_{\text{bbl (beer)}} = 165.0 \cdot 0.008521679108327368238061287793843952$$
$$\text{Volume}_{\text{bbl (beer)}} = 1.406077$$
$$\therefore \ 165.0\ \text{l} = 1.406077 \ \text{bbl (beer)}$$