Best to get a gunsmith to help you.
This site will explain how to strip your pistol. http://www.thehighroad.org/archive/index.php/t-129970.html
3.4% of 765= 3.4% * 765= 0.034 * 765= 26.01
* 47933 Crawfordsville 765 * 47934 Crawfordsville 765 * 47935 Crawfordsville 765 * 47936 Crawfordsville 765 * 47937 Crawfordsville 765 * 47938 Crawfordsville 765 * 47939 Crawfordsville 765
Impossible to answer without a DETAILED description of ALL markings, barrel length, sights, caliber, accessories, box, papers, etc..
382.5= 50%/100% * 765= 50/100 * 765= 0.5 * 765= 382.5
765
765 g equals .765 kgs
17 = 765 / 45
198*765 = 151470
pi * 765 = approx. 2,403.3183799961918274239221882088
0.1111
765 + 575 = 1340