I had hoped to avoid that because of the confusion, but here is the technical version of how to calculate the three killings for those who understand. For those who don't, don't worry about it since it's not important.
Three killings for the year is based on the san he and san hui combinations. This year is the pig year - hai. Hai mao wei is the san he, or the wood frame. The opposing san hui or three meeting formation is the metal formation, which is shen you xu. Shen, the monkey, occupies SW3. You occupies W2 and Xu occupies NW1.
The Grand Duke is simply the animal's location of the year, which is Hai, NW3.
As for how much to avoid it or not, I will refrain from commenting on it since that is Marie's approach.
