Probability

The coefficients \(\mathrm{a}, \mathrm{b}, \mathrm{c}\) in the quadratic equation \(\mathrm{a} x^2+\mathrm{bx}+\mathrm{c}=0\) 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 :