Calculating the 
Cannabinoids
There are a few thing need:
(1st) You need to know how many candies your mix makes. # of candies = X
(2ed) You need to know your target dose in each candy. target dose = Y
(3rd) You need to know the potency(%) of your target cannabinoid that is in your extract. = Z
(4th) You need to know simple math.
Lets say your making CBN gummies today and you want them to be 4mg in each candy.
I know the recipe above makes 1200 candies in my molds.
X * Y= (T) total mg needed.
1200 x 4mg = 4800mg (T).
Now if we are using a 96% CBN Isolate. 0.01 x 96%= .96 or (Z)
T divided by Z
4800mg divided by 0.96 = 5000mg
Change mg to grams by dividing by a 1000.
5000mg/1000= 5 grams of my 96% CBN Isolate needed.
Let say your making CBD gummies and you want them to be 35mg in each candy.
X*Y=T
1200 x 35mg = 42000mg
This time we are using a distillate that is 91% CBD. 0.01 x 91% = .91
T divided by Z
42000mg divided by 0.91 = 46154mg
Change mg to grams
46.15 grams needed
If you wanted to make 10mg gummies 
1200 x 10mg = 12000mg needed.
we have a 85% distillate = 0.85
12000 / 0.85 = 14117mg needed or 14.12 grams
EDIT…FYI my CBN did not test at 96%, there is really no math involved if I would of used 100% 