How to Perform Simple Calculations in Microsoft Word Click the "File" tab and then click "Options". On the Word Options dialog box, click "Proofing" on the left and then click the "AutoCorrect Options" button in the AutoCorrect options section on the right. Click the "AutoFormat As You Type" tab and uncheck the "Hyphens (-) with dash (-)" box. Now, those neatly spaced equations should work perfectly.