\[(3,17 + 0,77\ :1,4) \cdot 3,5 - 4,216 =\]
\[= (3,17 + 0,55) \cdot 3,5 - 4,216 =\]
\[= 3,72 \cdot 3,5 - 4,216 =\]
\[= 13,020 - 4,216 = 8,804.\]