import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;


public class Main {

//	static int MAX = 10000;
	static int MAX = 2000000;
	static Object[] All = new Object[MAX+1];
	
	static int size( int x ) {
		if(x>999999) return 7;
		if(x>99999)  return 6;
		if(x>9999)   return 5;
		if(x>999)    return 4;
		if(x>99)     return 3;
		if(x>9)      return 2;
		return 1;
	}
	static int[] rotate( int value ) {
		List<Integer> result = new ArrayList<Integer>();
		int[] V = new int[8];
		int s = size(value);
		int x = value;
		
		for(int i=s-1;i>=0;i--) {
			V[i] = x%10;
			x /=10;
		}
		int rot;
		for(int i=1; i<s; i++) {
			if(V[i]!=0){
				rot=0;
				for(int j=0,ii=i;j<s; j++,ii=(ii+1)%s){
					rot=rot*10+V[ii];
				}
				if(rot>value && !result.contains(rot))
					result.add(rot);
			}
		}
		if( result.isEmpty() )
			return null;
		int[] r = new int[result.size()];
		for(int i=0; i<r.length; i++)
			r[i]=result.get(i);
		return r;
	}
	
	static void precalculate() {
		for(int i=1; i<=MAX; i++){
			All[i] = rotate(i);
		}
	}
	static int solve( Scanner in ) {
		int A, B, sol=0;
		
		A = in.nextInt();
		B = in.nextInt();

		for( int i=A; i<=B; i++) {
//			List<Integer> result = rotate(i);
			if( All[i]!=null ) {
				for(int value: (int[])All[i] ) {
					if( value <= B )
						sol++;
				}
			}
		}

		return sol;
	}
	
	public static void main ( String args[] ) {
		int T; 
		Scanner in = new Scanner(System.in);
		T = in.nextInt();
		int cnt=0;
		int sol;
		precalculate();
		for( cnt=1; cnt<=T; cnt++ ) {
			sol = solve( in );
			System.out.printf("Case #%d: %d\n", cnt, sol);
		}

	}
}

import java.util.Arrays;
import java.util.Scanner;
import java.util.StringTokenizer;


public class RecycledNumbers {
	
	public static void main(String[] args) {
		Scanner in=new Scanner(System.in);
		int cases=Integer.parseInt(in.nextLine())+1;
		Boolean[] arr=new Boolean[2000001];
		Arrays.fill(arr,false);
		for(int tt=1;tt<cases;tt++){
			StringTokenizer cmd=new StringTokenizer(in.nextLine());
			int low=Integer.parseInt(cmd.nextToken());
			int high=Integer.parseInt(cmd.nextToken());
			int pair=0;
			for(int i=low;i<high;i++){
				if(arr[i]){
					continue;
				}
				int count=0;
				int j=back(i);
				while(i!=j){
					if(j<=high&&j>=low){
						count++;
						arr[j]=true;
					}
					j=back(j);
				}
				if(count>0){
					pair+=(count*(count+1)/2);
					//System.out.println(i+" "+arr2[i]);
					arr[i]=true;
				}
			}
			System.out.printf("Case #%d: %d\n",tt,pair);
			for(int i=low;i<=high;i++){
				arr[i]=false;
			}
		}
	}
	public static int back(int n){
		int r=n%10;
		String str=n+"";
		if(r>0){
			str=r+str.substring(0,str.length()-1);
			//System.out.println("1 "+str);
		}
		if(r==0){
			int i;
			for(i=str.length()-1;str.charAt(i)=='0';i--);
			str=str.substring(i)+str.substring(0,i);
			//System.out.println("2 "+str);
		}
		n=Integer.parseInt(str);
		return n;
	}
}

