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.awt.geom.*;
import java.io.*;
import java.math.*;
import java.util.*;
import java.util.regex.*;
import static java.lang.Math.*;

public class Main {
	public Main() throws IOException {
		String input;
		int t;

		input = br.readLine();
		t = Integer.valueOf(input);

		for (int i = 0; i < t; i++) {
			if (i > 0)
				sb.append("\r\n");

			input = br.readLine();
			work(input, i);
		}

		System.out.print(sb);
	}

	private int rightShiftDec(int num) {
		int num2 = 10;

		if (num < 10)
			return num;

		while (true) {
			if (num < num2)
				break;

			num2 *= 10;
		}

		return num / 10 + (num % 10) * num2 / 10;
	}

	private void work(String input, int t) {
		//debug(input);
		int ret = 0;
		String[] inputArray = input.split(" ");
		int min = Integer.valueOf(inputArray[0]);
		int max = Integer.valueOf(inputArray[1]);
		boolean[] doneList = new boolean[2000000];
		int total;

		for (int i = min; i <= max; i++)
			doneList[i] = false;

		for (int i = min; i <= max; i++) {
			int num = i;
			int multiply = 1;

			if (doneList[i])
				continue;

			doneList[i] = true;

			while (true) {
				num /= 10;

				if (num == 0)
					break;

				multiply *= 10;
			}

			num = i;

			total = 0;

			while (true) {
				num = num / 10 + (num % 10) * multiply;
				//debug("i:", i, " num:", num);

				if (num < multiply)
					continue;

				if (num == i)
					break;

				if ((min <= num) && (num <= max)) {
					//debug("i:", i, " num:", num, " 1111");
					total++;
					doneList[num] = true;
				}
			}

			ret += (total + 1) * total / 2;
		}

		sb.append("Case #");
		sb.append(String.valueOf(t + 1));
		sb.append(": ");
		sb.append(String.valueOf(ret));
	}

	StringBuilder sb = new StringBuilder();
	BufferedReader br = new BufferedReader(
		new InputStreamReader(System.in));

	public static void main(String[] args) throws IOException {
			new Main();
	}

	public static void debug(Object... arr) {
		System.err.println(Arrays.deepToString(arr));
	}
}
