For finding out the span of the Antardasa of a planet in the Dasa of the same or another planet, multiply the Dasa years of the former with the Dasa years of the latter and divide the product by the total Dasa of the same or any other planet in the Antardasa of another planet. Multiply the years etc. of the Antardasa with the Dasa years of the other planet and divide the product by the total Dasa years of all the planets. The figure so available in months etc. will represent the Pratyantar Dasa of the former.

एकंकोडुदशास्वीयैर्गुणिरष्टादशात्मभिः । भिन्नं फलविपाकं तु कूर्यदिवै चित्रसंकुलम्‌ ॥1॥