Open Command prompt and type ping facebook.com  You will see the IP address as shown below.

Start your PC’s calculator, and change it to scientific mode for XP and Programmer mode for windows 7 (using the “View” menu)

Convert each of the 4 numbers (69, 171, 224 and 11) into an 8-digit binary value. In order to do this open your Windows calculator, select Scientific view.

Make sure ‘Dec’ is selected and enter the first number and select ‘Bin’. This would give you 8 digit binary value of 69 = 1000101.

Repeat the process of 3 Number as well. you will get Four 8-Digit binary Equivalent . Put them all together.

• Notice how any binary number less than 8 digit long have  had leading zeroes added to pad them out. reassembled into IP address order, you get 1000111.10101011.11100000.1011
• Remove the Dots, so you get one huge line of Binary, thus 100011110101011111000001011
• Convert 100010110101011111000001011 into a decimal value.  Select Bin and input 100010110101011111000001011 (copy-paste) and then Click on the “Dec” button on your calculator, and you will get the converted value of 73055755