CF858A 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

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