Make a csgo gamble site

You should make a csgogamble site where people buy a number from 1-10 and they put it in some kind of randomizer which gives the number 1) a 50% of getting out of the randomizer 2) a 25% 3) a 12.5% 4)6,25% 5) 3,125% and 6) a 3,125% of it if they get let's say 1 and they did choose number one they get 2 dollar (in skins) if they get 2 they get 4 dollar (in skins) all of this has to be done together with bots connected to steam to give people their stuff and accept the stuff