text: let sum_of_multiples = 0;
  
  for(let i = 1; i < 1000; i++){
      if(i % 3 == 0){
          sum_of_multiples += i;
      }
      else if(i % 5 == 0){
          sum_of_multiples += i;
      }
  }
  
  console.log(sum_of_multiples);
  