text: // JavaScript has only one type of number. Numbers can be written with or without decimals.
  
  
  let x = 3.14;    // A number with decimals
  let y = 3;       // A number without decimals
  console.log(x);
  console.log(y);
  
   x = 123e5;    // 12300000
   y = 123e-5;   // 0.00123
  console.log(x);
  console.log(y);
  
  
   x = 999999999999999;   // x will be 999999999999999
   y = 9999999999999999;  // y will be 10000000000000000
  console.log(x);
  console.log(y);
  
   x = 0.2 + 0.1;         // x will be 0.30000000000000004
  console.log(x);
  
   x = (0.2 * 10 + 0.1 * 10) / 10;       // x will be 0.3
  console.log(x);
  