Deduct the longitude of the aspecting planet from that of the aspected planet. The result is the range of the aspect. By the rule of three we can arrive at the aspect-strength from these degrees. We may have to add or subtract the proportionate difference between the strength fixed for that sign and that fixed for the next one. The resulting drigbala is malefic or benefic according to the aspecting planet being malefic or benefic. We have to enter these in terms of Rupas under two heads. The total will give the exact aspectstrength received by a planet.