Build a JavaScript Calculator

Objective: Build a CodePen.io app that is functionally similar to this: https://codepen.io/FreeCodeCamp/full/rLJZrA/.
Fulfill the below user stories. Use whichever libraries or APIs you need. Give it your own personal style.
User Story: I can add, subtract, multiply and divide two numbers.
User Story: I can clear the input field with a clear button.
User Story: I can keep chaining mathematical operations together until I hit the equal button, and the calculator will tell me the correct output.
Remember to use Read-Search-Ask if you get stuck.
When you are finished, click the "I've completed this challenge" button and include a link to your CodePen.
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