jmc

We consider that an octal digit may be represented as three binary digits since $8=2^3$. The octal digit $7_8$ corresponds to $111_2$, $6_8=110_2$, etc. So, to convert the binary number to octal, we convert digits in groups of 3. $$111\mid 010\mid 101\mid 110_2=7\mid 2\mid 5\mid 6_8$$Now we add the two numbers in octal: . The answer is $\boxed{7602_8}$.