Hi
I have read the task of implementing calculator in your wordpress website using javascript and i am confident i can do the job.
If you have any questions let me know...
I having a 2.8 years of experience in Wordpress, PHP and Javascript i have read the description you have given and i saw the calculator page also i'll finish this in one day
Have been Java Programmer and Web Developer since last 5 years having worked with Oracle and PwC. Have experience in Java, Java Script, HTML, JSP, Oracle ADF, Oracle JET