How many hero must be spent for 5* hero for max lvl

[Alpi]

Hello
Could you please help many hero I must spent for 5* hero for max lvl.
I read several links. But they are too complicated and like a master study. So I do’t undesrtand them.
I just need simple answer. Thank you.

[FraVit93]

Here a simple pic, say thanks to @Anya_the_Dude

[Alpi]

Awesome! Thank you…