Saad has mass 80kg when resting on the ground at the equator what will be the centripetal acceleration on saad if the radius of earth is 6.4×10^6 meter

I did try to solve. I hope it is correct, below is the solution:

put everything in s.i units
then the answer what u wrote is acceleration to get is divide by mass(80) G=6.011*10^-11
M=6*10^24
R=6.4*10^6
m=80

Hope it helps.