Hi John
Firstly draw the circle that you wish to divide (including the centre point) and then identify a position on the circle itself with, say, a cross.
Click on that cross and then activate 'radial copy'.
Follow the instructions at the bottom LH corner of the screen – firstly, identify the centre of the circle and then the system will ask you to "define the angle step" – enter the number of divisions, 125 in your case, in the box "steps". Hit 'enter' and the job's done.
Hope this helps you.
Regards, Roger