Directional derivative of $f(x, y, z)=x y^{2}+y z^{3}$ at the point (2,-1,1) in the direction of vector $\hat{\boldsymbol{I}}+2 \hat{\boldsymbol{J}}+2 \widehat{\boldsymbol{K}}$ (rounded off to two decimal places) is________________
Directional derivative of $f(x, y, z)=x y^{2}+y z^{3}$ at the point (2,-1,1) in the direction of vector $\hat{\boldsymbol{I}}+2 \hat{\boldsymbol{J}}+2 \widehat{\boldsymbol{K}}$ (rounded off to two decimal places) is________________