Does LimeSurvey have any presentation options to show survey results ?

Can Limesurvey perform calculations ?

Does LimeSurvey have any presentation options to show survey results ?

Not sure what is meant with "presentation options". Limesurvey is certainly no Powerpoint. It has a basic reporting (called 'Statistics" in Limesurvey) function implemented, but Limesurvey is primarily a data collection tool and for analysing results you should use a tool that was made for this purpose. However, to get a quick idea during fieldwork where the "journey" is going, you can surely use the basic reporting that is implemented in Limesurvey.
www.limesurvey.org/manual/Statistics/en

Can Limesurvey perform calculations ?

Yes, you can use equation type questions and expression manager/script to make calculations.
www.limesurvey.org/manual/Question_type_-_Equation
www.limesurvey.org/manual/Expression_Manager

In anyway, you could always try this out with the free tier on Limesurvey hosting that comes with your account here and you can look for yourself.