package fixjava;

public class StringUtils {

	/** Repeat the given string the requested number of times. */
	public static String repeat(String str, int numTimes) {
		StringBuilder buf = new StringBuilder(Math.max(0, str.length() * numTimes));
		for (int i = 0; i < numTimes; i++)
			buf.append(str);
		return buf.toString();
	}

	/**
	 * Pad the left hand side of a field with the given character. Always adds at least one pad character. If the length of str is
	 * greater than numPlaces-1, then the output string will be longer than numPlaces.
	 */
	public static String padLeft(String str, char padChar, int numPlaces) {
		int bufSize = Math.max(numPlaces, str.length() + 1);
		StringBuilder buf = new StringBuilder(Math.max(numPlaces, str.length() + 1));
		buf.append(padChar);
		for (int i = 1, mi = bufSize - str.length(); i < mi; i++)
			buf.append(padChar);
		buf.append(str);
		return buf.toString();
	}

	/**
	 * Pad the right hand side of a field with the given character. Always adds at least one pad character. If the length of str is
	 * greater than numPlaces-1, then the output string will be longer than numPlaces.
	 */
	public static String padRight(String str, char padChar, int numPlaces) {
		int bufSize = Math.max(numPlaces, str.length() + 1);
		StringBuilder buf = new StringBuilder(Math.max(numPlaces, str.length() + 1));
		buf.append(str);
		buf.append(padChar);
		while (buf.length() < bufSize)
			buf.append(padChar);
		return buf.toString();
	}

	/** Intern all strings in an array, skipping null elements. */
	public static String[] intern(String[] arr) {
		for (int i = 0; i < arr.length; i++)
			arr[i] = arr[i].intern();
		return arr;
	}

	/** Intern a string, ignoring null */
	public static String intern(String str) {
		return str == null ? null : str.intern();
	}

}

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


public class Main_Recycled {
	static int a,b;
	public static void main(String[] args)throws Exception {
		File _=new File("recycled.in");
		BufferedReader br=_.exists()? new BufferedReader(new FileReader(_)):new BufferedReader(new InputStreamReader(System.in));
		int t=Integer.parseInt(br.readLine().trim());
		StringTokenizer st;
		
		boolean visited[];
		int size,total;
		int temp;
		for (int i = 1; i <= t; i++) {
			total=0;
			st=new StringTokenizer(br.readLine());
			a=Integer.parseInt(st.nextToken());
			b=Integer.parseInt(st.nextToken());
			visited=new boolean[b+1];
			for (int j = a; j <= b; j++) {
				size=0;
				temp=j;
				while(!visited[temp]){
					visited[temp]=true;
					size++;
					temp=next(temp);
				}
				total+=size*(size-1)/2;
				
				
			}
			System.out.println("Case #"+i+": "+total);
		}
	}

	private static int next(int temp) {
		String str=""+temp;
		do{
			str=str.substring(1,str.length())+str.charAt(0);
		}
		while(Integer.parseInt(str)<a||Integer.parseInt(str)>b);
		return Integer.parseInt(str);
	}
}
