How do you find the determinant of |(8,9,3), (3,5,7), (-1,2,4)|?

$| \left(8 , 9 , 3\right) , \left(3 , 5 , 7\right) , \left(- 1 , 2 , 4\right) | = - 90$
$| \left(8 , 9 , 3\right) , \left(3 , 5 , 7\right) , \left(- 1 , 2 , 4\right) | = 8 | \left(5 , 7\right) , \left(2 , 4\right) | - 9 | \left(3 , 7\right) , \left(- 1 , 4\right) | + 3 | \left(3 , 5\right) , \left(- 1 , 2\right) | =$
$8 \left(5 \cdot 4 - 7 \cdot 2\right) - 9 \left(3 \cdot 4 + 1 \cdot 7\right) + 3 \left(3 \cdot 2 + 1 \cdot 5\right) =$
$8 \cdot 6 - 9 \cdot 19 + 3 \cdot 11 = 48 - 171 + 33 = - 90$