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;
	}
}

import java.util.Scanner;
import java.io.OutputStream;
import java.io.IOException;
import java.io.FileOutputStream;
import java.io.PrintWriter;
import java.io.FileInputStream;
import java.io.InputStream;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 * @author Prabu
 */
public class Main {
	public static void main(String[] args) {
		InputStream inputStream;
		try {
			inputStream = new FileInputStream("IO/C-small-attempt0.in");
		} catch (IOException e) {
			throw new RuntimeException(e);
		}
		OutputStream outputStream;
		try {
			outputStream = new FileOutputStream("IO/C-small-attempt0.out");
		} catch (IOException e) {
			throw new RuntimeException(e);
		}
		Scanner in = new Scanner(inputStream);
		PrintWriter out = new PrintWriter(outputStream);
		CJ2012QR_RecycledNumbers solver = new CJ2012QR_RecycledNumbers();
		int testCount = Integer.parseInt(in.next());
		for (int i = 1; i <= testCount; i++)
			solver.solve(i, in, out);
		out.close();
	}
}

class CJ2012QR_RecycledNumbers {
	public void solve(int testNumber, Scanner in, PrintWriter out) {
        int A = in.nextInt();
        int B = in.nextInt();

        if(B < 10) {
            out.printf("Case #%d: 0\n", testNumber);
            return;
        }

        boolean[] visited = new boolean[B-A+1];
        int nDigits = String.valueOf(A).length()-1;
        int cycleCount, pairCount, tempi;
        StringBuilder sb;
        pairCount = 0;
        for(int i = A; i <= B; i++) {
            if(visited[i - A])
                continue;

            sb = new StringBuilder(String.valueOf(i));
            sb.insert(0, sb.charAt(sb.length() - 1));
            sb.deleteCharAt(sb.length() - 1);
            tempi = Integer.parseInt(sb.toString());
            cycleCount = 0;
            while(i != tempi) {
                if(tempi >= A && tempi <= B && visited[tempi - A] == false) {
                    cycleCount++;
                    visited[tempi - A] = true;
                }

                sb.insert(0, sb.charAt(sb.length() - 1));
                sb.deleteCharAt(sb.length() - 1);
                tempi = Integer.parseInt(sb.toString());
            }

            pairCount += (cycleCount * (cycleCount + 1)) / 2;
        }
        out.printf("Case #%d: %d\n", testNumber, pairCount);
	}
}

