As for the Indonesian subtitle, I assume you're looking for a way to watch this movie with Indonesian subtitles.

"Combien tu m'aimes" is a 2005 French romantic comedy film directed by Zabou Breitman. The movie stars Kad Merad, Frédéric Diefenthal, and Zabou Breitman. The story revolves around a man who tries to win back his ex-girlfriend by using a mathematical formula to calculate the exact amount of love she has for him.

If you're looking for information on this movie, here's what I found: