In a certain language, $\text{CAR}$ is written as $3118$. How will $\text{FUR}$ be written in the same language?

The coding is based on the chronological positional value of letters in the English alphabet:
* $\text{C}=3$
* $\text{A}=1$
* $\text{R}=18$
Combining them gives $3118$.

Applying the same logic to $\text{FUR}$:

* $\text{F}=6$
* $\text{U}=21$
* $\text{R}=18$
Combining them gives $62118$.