I have an equation (“RD#@Annotations”*.104) that does not return the correct answer. By my calculations if “RD#@Annotations” is 561 than the result should be 58.344 (at least according to my calculator and Excel). The equation editor in SW says it is 56.09375. Has anyone run into a situation where they get the wrong answer to an equation?

Not knowingly...

That's an odd error for sure. If you manually input the info, does it work? What if you change the multiplier? Have you deleted the formula and retried it?