Simplify the following text for a Grade 8 native English-speaking person.
Original: When the Long Island Rail Road 's new station , below the existing levels , opens ( see East Side Access ) , Grand Central will offer a total of 75 tracks and 48 platforms .
Simplified: When the Long Island Rail Road 's new station , below the existing levels , opens , Grand Central will offer a total of 75 tracks and 48 platforms .