Since .rar archives are split into parts, you only need to right-click Part 01 and select "Extract Here." WinRAR or 7-Zip will automatically pull the data from the remaining parts, including part03 , as long as they are all in the same folder.
Many uploaders use their website's URL (e.g., ://website.com ) or the name of the release group (e.g., CPY , STEAMPUNKS , or CorePack ). FIFA18.part03.rar
Be wary of sites that ask you to complete a "survey" or download a separate .txt file to view the password; these are often scams or contain malware. FIFA18.part03.rar
Did you download this from a or repack group (like FitGirl or ElAmigos)? FIFA18.part03.rar