Let $f\left(x\right)$ is a differentiable function on $x\in R$, such that $f\left(x+y\right)=f\left(x\right)f\left(y\right)$ for all $x,y\in R$ where $f\left(0\right)\ne 0.$ If $f\left(5\right)=10, f^{\text{'}}\left(0\right)=6$, then the value of $f^{\prime }\left(5\right)$ is equal to

Hence, the correct answer is 60.