How to do simple math without using AutoLisp

I would like to know if there is a way / setting that I can turn of to where can do simple math problems when inputing numbers say for like offsetting a line without having to use AutoLisp.

I have searched on here for about an hour now and could not find an answer. I remember doing this in the past without having this issue.

For example if I was to offset a line I would type in "5.75/2" and get 2.875. I would like to be able to do this without having to type ( / 5.75 2).

Is there a way to do this without having to type all of that.

I am using AutoCad 2014, and at work we design driveline equipment so alot of the drawings are from a front view to a section view, and for like a round cover that is in the front view it is easy to offset the centerline in the section view by the radius and contine drawing the section view.

How can I do this???

Thanks,

Tony

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