The coefficients \( a, b, c \) in the quadratic equation \( a x^{2} + b x + c = 0 \) are from the set \( \{1, 2, 3, 4, 5, 6\} \). If the probability of this equation having one real root bigger than the other is \( p \), then \( 216p \) equals
\( 76 \)
\( 57 \)
\( 19 \)
\( 38 \)
