Complex sentence: The 925 area code was created March 14,1998 when the 510 area code was itself split the number was formed by taking 415 and adding 510 which equals 925.
Split into simpler sentences: The 925 area code was created March 14,1998 when the 510 area code was itself split. The number was formed by taking 415 and adding 510 which equals 925.