import java.math.*;
class M{
  static String c(int... a){
    return new BigDecimal(a[0]).divide(new BigDecimal(a[1]), a[2], 3)+"";
  }
 
  public static void main(String[] a){
    System.out.println(c(1, 2, 1));
    System.out.println(c(1, 2, 2));
    System.out.println(c(13, 7, 27));
    System.out.println(c(2, 3, 1));
    System.out.println(c(4, 5, 7));
    System.out.println(c(4, 5, 0));
    System.out.println(c(9999, 23, 0));
    System.out.println(c(12345613, 2321, 89));
  }
}

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