Magical calculation

Today I tell you through Magical calculation how many brothers and sisters you have ...

1- Take the number of brothers first! 

2- Add 2 in it now! 

3- Multiply the answer by 2! 

4- Add 1 in it now! 

5- Multiply the answer by 5! 

6- Find the number of sisters in that answer! 7- Now subtract 25 from the next answer!

8- Now you get the double digit number.

The first number is the brother and the second number is the number of sisters.