4 3 / 2\ / 2 \ \2*a*b / *\2*a *b/
(2*a*b^2)^4*(2*a^2*b)^3
1*(a + 0)*(b + 0)
(1*(a + 0))*(b + 0)
10 11 128*a *b
128*a^10*b^11
128.0*a^10*b^11