Gram Schmidt in 3 space

Folks,

Where am I going wrong?

v_1=(3,0,0), v_2=(0,1,2),v_3=(0,2,5)

u_1=(3,0,0)

u_2=(0,1,2)-\frac{(0,1,2)(3,0,0)}{||(3,0,0)||^2}(3,0,0)