import java.util.Scanner;
import java.io.*;
import java.lang.Math;


public class C{
	public static int recycle(String str){
		String[] numbers = str.split(" ");
		int min = Integer.parseInt(numbers[0]);
		int max = Integer.parseInt(numbers[1]);
		int ret = 0;

		for(int i = min; i < max; i++){
			String num = i + "";
			int len = num.length();
			int k = i;
			for(int j = 1; j < len; j++){
				k = (k/10) + (int)java.lang.Math.pow(10.0,(double)(len-1))*(k%10);
				if (k > i && k <= max)
					ret++;
				else if(k == i)
					break;
			}
		}

		return ret;
	}

	public static void main(String[] args){
		Scanner sc = null;
		String next;
		int out;
		try{
			sc = new Scanner(new File("C-large.in"));
			int cases = Integer.parseInt(sc.nextLine());
			int current = 0;
			

			FileWriter fs = new FileWriter("output.txt");
			BufferedWriter buff = new BufferedWriter(fs);
			while(current < cases){
				next = sc.nextLine();
				current++;
				out = recycle(next);
				buff.write("Case #" + current + ": " + out + "\n");
			}
			buff.close();
		}
		catch(Exception ex){}
	}
}
package com.google.codejam.util;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;

public class CodeJamOutputFile extends File {

	/**
	 * 
	 */
	private static final long serialVersionUID = -6971460798309687528L;
	private FileWriter writer;
	private Boolean caseZero = false;
	
	public CodeJamOutputFile(String pathname) {
		super(pathname);
		
		try {
			this.setWriter();
		} catch (IOException e) {
		}
	}

	private void setWriter() throws IOException {
		this.writer = new FileWriter(this);
		
	}

	public FileWriter getWriter() {
		return writer;
	}
	
	public void writeCase(int caseId, String result){
		if(caseId == 0){
			caseZero = true;
		}
		
		caseId = caseZero ? caseId + 1 : caseId;
		
		try {
			writer.write("Case #"+(caseId) +": " + result + "\n");
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	
	public void close(){
		try {
			writer.close();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

}
