Brihat Parashara Hora Shastra
जनो यत्रांशके जातो गतनाडीपलादिभिः । तदांशस्य हताः स्वाब्दाः पञ्चभूमिविभाजिताः ॥ ९०॥
Multiply the past Ghatikas, Palas etc. of the Pad of the Nakshatr, in which a person is born, by the existing Dasha years and divide it by 15.
english translation
jano yatrAMzake jAto gatanADIpalAdibhiH । tadAMzasya hatAH svAbdAH paJcabhUmivibhAjitAH ॥ 90॥
hk transliteration by Sanscript