Find that number

Number Theory Level 2

$P(x)$ is a monic polynomial with integral coefficients $a_1, a_2, a_3,...,a_9$ are distinct integers such that $P(a_1) =P(a_2)=...=P(a_9)=10$ . Find the integer $b$ such that $P(b)=981$ .

If you think that no such integer exists, write 0 as your answer.