I’ll be in for balloon number 37.

I’ll be in for balloon 38

and balloon 39 is here

Here is balloon number 40!

Well here is number 41!

Balloon number 42

Here
 

P. O. P. Ballon popped

So that was 42x5= 210 ball busts.
But post 7687 is prime, so doubling the busts gives us 420 ;)

Starting again- balloon number 1

Balloon number 2

Balloon number 3

Man, unlucky on the prime, but lucky on hitting the big 4-2-0.

Here is ballon number 3

Oops, should have been 4, glad someone fixed below.

Balloon number 4 here

I think this is technically balloon number 6 as there are two number three.

I’ll be balloon number 7

I’ll add balloon 8.