title: I want to find the sum of the number which i have
body: <p>I have some code where I must find the multiples of number 3 and then summarize them 
  I have done the first job, I mean I found all the multiples of number 3 with for loop but I can't summarize all the numbers which I found.</p>
  
  <p>I have tried so many times and tried to find the solution on google, but could not find</p>
  
  <pre><code>x = 3
  for number in range(1000):
      if number%x == 0:
          print(number)
  </code></pre>
  
  <p>I need now the sum of all the numbers which indicates on this code, when you run this code you can see that there is publishing only the numbers that can divide by 3 now I need the sum of them</p>