I can give you an idea. Create a web application of a calculator which has different webpage for different operations. Create a login functionality which is needed before accessing calculator. Use express js to create the server. Further, save every operation in mysql database through forms in html and nodejs mysql library. Use jquery to retrieve the data from database as needed.
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I can give you an idea. Create a web application of a calculator which has different webpage for different operations. Create a login functionality which is needed before accessing calculator. Use express js to create the server. Further, save every operation in mysql database through forms in html and nodejs mysql library. Use jquery to retrieve the data from database as needed.