Deva Keralam (Selections) · by Venkatesa and Achyuta
Chapter 3 · Dasha
दशाफलम्
सप्तभिर्गुणितं चैव स्वष्टभिर्भागमाहरेत् ।रोगं लाभं क्रमेणैव ग्रहाणामष्टधा गतिः ॥ २८१२ ॥
In the full Deva Keralam this is Venkatesa 2812.
Multiply it by 7, and divide by 8. The remainders give illness, gain and so on, in order. The planets' course is eightfold.
Simple meaning: Multiply the star count by 7, divide by 8, and the remainder gives the result.
तद्भेदेन च तत्कार्यं गतिभेदं फलं स्मृतम् ।
Count from the dasha lord's star to the sub-period lord's star.
सप्तभिर्गुणितं कृत्वा ह्यष्टभिर्भागमाहरेत् ।
After the count, the remainder gives illness, gain, travel, prison or wealth.
ऐश्वर्यमर्थनाशं च ह्यपमृत्युं तथा वदेत् ।
The last remainders give power, money loss or, the verse says, early death.