97172 Help with Joomla error

I need help with what looks to be a very simple joomla error! I am not very advanced in php and need someone to assist me in fixing this error, should take no more than 5 mins. The site is [login to view URL] and the error is on all pages of the site, it reads: Warning: Division by zero in /data/10/0/104/90/919416/user/940267/htdocs/templates/rt_modbusiness/[login to view URL] on line 63 Please bid and if possible I need it fixed asap! Thanks