You are not going to like the answer. Adding the fruit probably lowered the effective gravity of the beer.
Yes, the fruit does have sugars, but for the volume of the fruit you added, the gravity would be lower than the gravity of the original wort (especially a BW).
Whenever I add fruit, I assume it is gravity neutral.
If you want to do the calculations yourself, fruit has approximately 10% of the sugar as plain table sugar by weight. That is, 10 lbs of fruit is equivalent to 1 lb of sugar.