Aaaaaaaaah! What a such list to translate! :)

PS I have put _cvolume 0 : that gives the good result with 2 decimal! 1688, 42 (takes just 26 seconds on my computer ;)
The other values goes very more speedy! :)
_cvolume 2 1688, 34 in 3 seconds
_cvolume 3 1688, 22 in 2 seconds
_cvolume 4 1688, 06 in 1 second
_cvolume 5 1687, 84 in 0 second

_Cvolume Alone is like _cvolume 3 : 1688, 22 in 2 seconds