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.*;


public class CodeJamC {
	
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int t = scan.nextInt();
		for (int i = 1; i <= t; i++) {
			int n = 0;
			int a = scan.nextInt();
			int b = scan.nextInt();
			for (int j = a; j <= b; j++) {
				int x = j;
				int m = 1;
				while (true) {
					x = rotate(x);
					if (x == j) {  // Cycled
						n += m * (m - 1) / 2;
						break;
					} else if (a <= x && x <= b) {
						if (x < j)  // Duplicate
							break;
						else
							m++;
					}
				}
			}
			System.out.printf("Case #%d: %d%n", i, n);
		}
	}
	
	
	private static int rotate(int x) {
		String s = x + "";
		while (true) {
			s = s.substring(1) + s.charAt(0);
			if (s.charAt(0) != '0')
				return Integer.parseInt(s);
		}
	}
	
}