this is we should do after found the magical question
Multiply this number by 35.
2. the answer is 2100
3. Then goto http://quill.pottermore.com/2100
4. you will find guardian page and found the pink box like pic beside
5. wait until you see feather
6. levitate feather from bottom to the up of the box by shaking your mouse left and right from bottom to top of the box (press the left botton and hold)
then congratulation, you got it
just fill the registration form