import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

class RecycledNumbers{
	
	
	
	int getcount(int small,int large){
		int count = 0;
		for(int currnum = small; currnum < large; currnum++){
			int permut = currnum;
			int no_of_digits = 0;
			while(permut > 0){
				permut = permut/10;
				no_of_digits++;
			}
			int lastDigit = currnum % 10;
			permut = currnum / 10;
			permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
			while(permut != currnum){
				
				if(permut >= currnum && permut <= large){
					
					count++;
				}
				lastDigit = permut % 10;
				permut = permut / 10;
				permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
				
			}
			
		}
		
		return count;
	}
	
	public static void main(String args[]){
		RecycledNumbers d = new RecycledNumbers();
		
		int no_of_cases = 0;
		String input = "";
		
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		try{
			no_of_cases = Integer.parseInt(br.readLine());
		}
		catch(Exception e){
			System.out.println("First line is not a number");
		}
		
		for(int i=1; i <= no_of_cases;i++){
			try{
				input = br.readLine();
			}
			catch(Exception e){
				System.out.println("Number of test cases different from the number mentioned in first line");
			}
			
			System.out.print("Case #" +i+": ");
			
			StringTokenizer t =  new StringTokenizer(input);
			int small=0,large=0;
			if(t.hasMoreTokens()){
				small = Integer.parseInt(t.nextToken());
			}
			if(t.hasMoreTokens()){
				large = Integer.parseInt(t.nextToken());
			}
			System.out.println(d.getcount(small,large));
			
		}
		
		
		

	}
	
	
}
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

import com.ibm.db2.jcc.am.s;


public class C {
    private static final String INPUT_FILE = "d:/C-small-attempt0.in";
    private static final String OUTPUT_FILE = "d:/result.txt";
    private static final int MAX_VALUE = 2000000;
    private static int T;
    static int[] d = new int[1 + MAX_VALUE];
    static int a, b;
    static long[] result;
    
    static void init() {
        for (int i = 1; i <= MAX_VALUE; ++i) {
            if (d[i] != 0) {
                continue;
            }
            d[i] = i;
            String s = "" + i;
            for (int j = 0; j < s.length(); ++j) {
                s = s.substring(1) + s.charAt(0);
                if (s.charAt(0) != '0') {
                    int v = Integer.parseInt(s);
                    if (v > MAX_VALUE) continue;
                    d[Integer.parseInt(s)] = i;
                }
            }
        }
    }
    
    static void Input() throws Exception {
        InputStream in = new FileInputStream(INPUT_FILE);
//        InputStream in = System.in;
        Scanner scanner = new Scanner(in);
        T = scanner.nextInt();
        result = new long[T + 1];

        for (int i = 0; i < T; ++i) {
            a = scanner.nextInt();
            b = scanner.nextInt();
            solve(i, a, b);
        }
    }
    
    static void solve(int c, int a, int b) {
        long rst = 0;
        int[] map = new int[MAX_VALUE + 1];
        for (int i = a; i <= b; ++i) {
            ++map[d[i]];
        }
        for (int i = a; i <= b; ++i) {
            if (map[d[i]] > 0) {
                int v = map[d[i]];
                rst += 1L * v * (v - 1) / 2;
                map[d[i]] = 0;
            }
        }
        result[c] = rst;
    }
    
    static void Output() throws Exception {
        FileWriter writer = new FileWriter(new File(OUTPUT_FILE));
        for (int i = 0; i < T; ++i) {
            String rs = "Case #" + (i + 1) + ": " + (result[i]) + "\n";
            writer.write(rs);
            System.out.println(rs);
        }
        writer.close();
    }
    
    /**
     * @param args
     */
    public static void main(String[] args) throws Exception {
        long start = System.currentTimeMillis();
        init();
//        System.out.println(System.currentTimeMillis() - start);
        Input();
        Output();
    }
}
