The specific gas constant for a dry gas is $287.05 \text{ J}/(\text{kg}\cdot\text{K})$. Convert this value to the Imperial units of $\text{ft}\cdot\text{lb}_f/(\text{lb}\cdot^\circ\text{R})$. (Take $1 \text{ J} \approx 0.73756 \text{ ft}\cdot\text{lb}_f$, $1 \text{ kg} \approx 2.20462 \text{ lb}$, and a temperature scale conversion of $1.8 \text{ } ^\circ\text{R} = 1 \text{ K}$)