Question 720943

{{{(-2st^2t)(t^2)^3(s^4t)}}}

{{{(-2st^3)(t^6)(s^4t)}}}

{{{(-2st^3*t^6)(s^4t)}}}

{{{(-2st^9)(s^4t)}}}

{{{-2s*s^4*t^9*t}}}

{{{-2s^5*t^10}}}