Stats-Bell Curve

[supun75]

Hey Guys and girls i need to draw a bell curve using excel...
These are the data i have

Grade​

Total​

S​

23​

C​

170​

A​

57​

using these 3 data i need to draw a bell curve using excel ,matlab or any other software...
Plzz help me
Thxxxxxxxxxxxxxxx

 

[supun75]

plzz help

 

[supun75]

no one?

 

[supun75]

kawruth naddoo?