import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */


import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Scanner;

/**
 *
 * @author linlin
 */
public class Main {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws FileNotFoundException, IOException {
        // TODO code application logic here
        File file=new File("C-small-attempt0.in");
        FileOutputStream o=new FileOutputStream("a.txt");
        Scanner s=new Scanner(file);
        int t=Integer.valueOf(s.nextLine());
        for(int i=1;i<=t;i++){
            String line=s.nextLine();
            String[] num=line.split(" ");
            int a=Integer.valueOf(num[0]);
            int b=Integer.valueOf(num[1]);
            int d=1;
            int tens=10;
            for(;tens<=a;tens=tens*10)
                    d++;
            tens=tens/10;

            int[] total=new int[d];
            for(int q=a;q<=b;q++){
                int correct=0;
                int q1=q;
                boolean shift=true;
                for(int k=0;k<d;k++){

                    int r1=q1%10;
                    q1=q1/10+r1*tens;
                    if((q1==q)&&shift)
                        break;
                    else if((q1>=a)&&(q1<=b)){
                        correct++;
                        //System.out.println(q1);
                    }
                    shift=false;
                    
                }
                if(correct>1){
                    total[correct-1]=total[correct-1]+1;
                   
                }

            }
            int result=0;
            for(int n=1;n<d;n++){
                result=result+(total[n]*n/2);
                
            }
            String out="Case #"+i+": "+result+"\r\n";
            o.write(out.getBytes());



        }
    }

}
