0
      
      1
      2
      3
      +
      
      4
      5
      6
      -
      
      7
      8
      9
      *
      
      A/C
      0
      .
      /
      =
      ^
   
 
Issues, fixes, and features:
  - Solved and fixed error in which if first num was a decimal, input would be truncated to integer
 
  - Added custom CSS (didn’t like non-static background and color theme from default)
 
  - Implemented exponent function