Zeraora Vstar and Choice belt/Telescopic Sight

Ive been recently playing a Zeraora Vstar deck and I have a question about its Vstar attack and tools that boost attacks damage.

The Vstar attack is Thunder Star "Choose 1 of your opponent's Pokémon 4 times.(You can choose the same more than once.) For each time you chose a Pokémon, do 60 damage to it. This damage isn't affected by Weakness & Resistance (You can't use more than 1 VSTAR Power in a game)"

I also had a choice belt which has the description of

"The attacks of the Pokémon this card is attached to do 30 more damage to your opponent's Active Pokémon V."

So if my opponent had a V out (lets say a vmax with 320 health) If I used my Vstar attack on it and chose that pokemon all 4 times, should that be doing 90 damage per attack or 60 and then another 30 at the end?

The same goes for Telescopic Sight

If I chose a benched V 2 times would it do 90 each time or 60 twice and then 30 at the end.

Im going to test both of these out in Live but just wondering if anyone else had any thoughts on that.