Has anyone ever calculated how much china is actually owed in reparations from the imperialists?

I know china doesn't need them (and probably doesn't necessarily want them either) but I was reading on western imperialism in china (not that I was ignorant of the concept before) and I dont think I ever conceptualized how much wealth the west got from china without ever paying a cent back. The forced loans in "war reparations" alone is probably in the millions

This is more a thought experiment than a genuine like, policy proposal or anything