A11242. k-rounding

For a given positive integer $n$ denote its $k$ -rounding as the minimum positive integer $x$ , such that $x$ ends with $k$ or more zeros in base $10$ and is divisible by $n$ .

For example, $4$ -rounding of $375$ is $375·80=30000$ . $30000$ is the minimum integer such that it ends with $4$ or more zeros and is divisible by $375$ .

Write a program that will perform the $k$ -rounding of $n$ .

The only line contains two integers $n$ and $k$ ( $1<=n<=10^{9}$ , $0<=k<=8$ ).

Print the $k$ -rounding of $n$ .