Increment numbers in Vim

Today I learned about a great command to increase numbers in Vim!

How to go from here:

0
0
0
0
0
0
0

To here:

1
2
3
4
5
6
7

1. vG to select to the bottom
2. g<C-A> to increment each number by one

Find help about it with :h v_g_^x.