In the box score, FG includes both 2-pt and 3-pts shots.
Your team was 51-111 from FG, and 13-25 from 3FG. That means they were
38-86 on 2FG,
So 38x2 + 13x3 + 4x1 = 119 points.
Alternatively:
51x2 + 13x1 + 4x1 = 119 points.
(in the alternate form it is treated as two points per FG, with a one point bonus for those outside the 3 point line).
The inclusion of 3FG in FG stats is conventional, at least in the USA.