Help my intern to finish his android app

My intern is making an android application for my company. He has done a lot of work, but has stumble upon a wall he does not know how to do somethings. He is making a android app for my company to make a cost/benifit calculation for led lighting. I have made a pdf calculation form that he needs to implement into a android app. It consisit out of 2 parts. 1. a PI invoice part where all items are stated with old energy usage, new energy usage, item description and price. (The items with old and new energy usage is liked to a mysql database that is already setup) 2. this parts consist of calculations, how many lights are being replaced, how many hours per day are these lights used, what energy price, how many burning hours per year. then what is the customer saving on money in comparison with old lighting and in how many years does the customer has it's ROI. I want you to help my intern finish his project....then help him with styling the app etc. Most of the things are already done, but he does not have the complete knowledge to finish it. See attachment 'cost-benefit calculation' on how MY pdf looks like and how the calculations are done...You cannot changes the calculations, you need a password for this. This is for the protection of my work. I can also send the project of my intern on what he has done so far. Please contact me for this.