Subject: i want to build a calculator that has at least 20 memory sections to it

I am trying to find out how to build a calculator that has at least 20 memory 
buttons on it. I want to have a constant memory of 20 sections to run a balance 
of 20 different sections of finance. Can this be done?  and if so how can i get 
it built for me. I am not a technical expert in engineering but i would rather 
decribe what i want built and have someone build it for me.
Thanks
Teresa George

Re: i want to build a calculator that has at least 20 memory sections to it