text: var test = [12, 929, 11, 3, 199, 1000, 7, 1, 24, 37, 4,
      19, 300, 3775, 299, 36, 209, 148, 169, 299,
      6, 109, 20, 58, 139, 59, 3, 1, 139
  ];
  
  // Write your code here
  test.forEach(function(value, index, array) {
      
      if(value % 3 === 0){
          array[index] += 100;
      }
      
  });
  console.log(test);