import java.io.*;

class code1
{
	public static void main(String args[]) throws Exception 
	{
		File ii = new File ("C-small-attempt1.in");
		FileInputStream fis = new FileInputStream(ii);
		BufferedReader  br = new BufferedReader(new InputStreamReader (fis));
		int cases = Integer.parseInt(br.readLine());
		FileOutputStream fout = new FileOutputStream ("output.txt");
		DataOutputStream dout = new DataOutputStream (fout);
		int total=0;
		for(int i=0;i<cases;i++){
		String temp = br.readLine();
		String parts [] = temp.split(" ");
		int lower = Integer.parseInt(parts[0]);
		int upper = Integer.parseInt(parts[1]);
		System.out.println(lower+" "+upper);
		
		for(int j=lower;j<=upper;j++)
		{
			int abc = j;int length=0;
			if(j<10)continue;
			while (abc!=0){abc/=10;length++;}
			abc=j;
			for(int m=0;m<length-1;m++){
				int shift = abc%10;
				abc=abc/10;
				System.out.println("hi "+j);
				abc=abc+shift*power(10,length-1);
				if(abc<=upper&&shift!=0&&abc>j)total++;
				System.out.println(total);
			}
		}
 		dout.writeBytes("Case #"+(i+1)+ ": "+total+"\n");
 		total=0;
		}//for close
		
	}

	private static int power(int i, int j) {
		int no=1;
		for(int a=0;a<j;a++){no=10*no;}
		return no;
	}
}
import java.io.*;
import java.util.*;
 
public class test {

    public static void main(String[] args) throws IOException {
 
        // Location of file to read

	functions aa = new functions();
        File file = new File("input.txt");
	Writer output = new BufferedWriter(new FileWriter("output.txt"));
	int i = 1;
	int answer = 0;
	String A = "";
	String B = "";
	int j = 0;
	int n = 0;
	
        try {
 
            Scanner scanner = new Scanner(file);
 	    n = Integer.parseInt((String)scanner.nextLine());
 	    
            while (scanner.hasNextLine()) {
            	A = "";
            	B = "";
                String line = scanner.nextLine();
                while(line.charAt(j) != ' '){
			A = A + line.charAt(j);
			j++;
                }
                j++;
                while(j < line.length()){
			B = B + line.charAt(j);
			j++;
                }
		j = 0;
                answer = aa.solve(A,B);
			if(i < n)
				output.write("Case #" + i +": "+ answer +"\n");
			else
				output.write("Case #" + i +": "+ answer);
		i++;
		
            }
            scanner.close();
            output.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
       }
      }
