Convert Metric cup to US beer barrel
Unit definitions
Metric cup
The metric cup is equal to $250$ milliliters.
US beer barrel
The US beer barrel is defined as exactly $31$ US liquid gallons.
How to convert Metric cup to US beer barrel
$$\text{Volume}_{\text{bbl (beer)}} = \text{Volume}_{\text{cup (metric)}} \cdot 0.002130419777081842059515321948460988$$
Examples
Example 1
Convert $45.0\ \text{cup (metric)}$ to $\text{bbl (beer)}$.
$$\text{Volume}_{\text{bbl (beer)}} = 45.0 \cdot 0.002130419777081842059515321948460988$$
$$\text{Volume}_{\text{bbl (beer)}} = 0.095869$$
$$\therefore \ 45.0\ \text{cup (metric)} = 0.095869 \ \text{bbl (beer)}$$
Example 2
Convert $60.0\ \text{cup (metric)}$ to $\text{bbl (beer)}$.
$$\text{Volume}_{\text{bbl (beer)}} = 60.0 \cdot 0.002130419777081842059515321948460988$$
$$\text{Volume}_{\text{bbl (beer)}} = 0.127825$$
$$\therefore \ 60.0\ \text{cup (metric)} = 0.127825 \ \text{bbl (beer)}$$
Example 3
Convert $115.0\ \text{cup (metric)}$ to $\text{bbl (beer)}$.
$$\text{Volume}_{\text{bbl (beer)}} = 115.0 \cdot 0.002130419777081842059515321948460988$$
$$\text{Volume}_{\text{bbl (beer)}} = 0.244998$$
$$\therefore \ 115.0\ \text{cup (metric)} = 0.244998 \ \text{bbl (beer)}$$
Example 4
Convert $130.0\ \text{cup (metric)}$ to $\text{bbl (beer)}$.
$$\text{Volume}_{\text{bbl (beer)}} = 130.0 \cdot 0.002130419777081842059515321948460988$$
$$\text{Volume}_{\text{bbl (beer)}} = 0.276955$$
$$\therefore \ 130.0\ \text{cup (metric)} = 0.276955 \ \text{bbl (beer)}$$
Example 5
Convert $175.0\ \text{cup (metric)}$ to $\text{bbl (beer)}$.
$$\text{Volume}_{\text{bbl (beer)}} = 175.0 \cdot 0.002130419777081842059515321948460988$$
$$\text{Volume}_{\text{bbl (beer)}} = 0.372823$$
$$\therefore \ 175.0\ \text{cup (metric)} = 0.372823 \ \text{bbl (beer)}$$