Multiplying and Dividing Functions

Acceleration is calculated by dividing the change in time by the change in velocity.

If $V(x)=x^{3}+2x+x$ is the function for the change in velocity and $T(x)=x^{2}+4x+3$ with $x>0$ is the function for the change in time, what is the equation for acceleration? What would be $A(5)$?