Because każdy punkt procentowy w kursie wymiany to dodatkowe 4,20 zł dla kasyna przy średniej wygranej 210 zł.
https://mangband.org/forum/viewtopic.php?f=10&t=13602
http://47.88.101.141/forum.php?mod=viewthread&tid=373018&extra=
http://www.prepody.ru/topic30576.html
http://www.lada-xray.net/showthread.php?p=204168#post204168
http://horsecity.ru/phpBB3/viewtopic.php?f=22&t=440469
https://phantom.everburninglight.org/archbbs/viewtopic.php?pid=507919#p507919
https://classic.darkml.net/bbs/forum.php?mod=viewthread&tid=8888&extra=
https://mahayu.link/forum.php?mod=viewthread&tid=22409&extra=
http://treasureillustrated.com/showthread.php?tid=301159
https://ufr-2020.front5.picapo.net/forums/viewtopic.php?pid=444287
https://ufr-2020.front5.picapo.net/forums/viewtopic.php?pid=383501