I may have borrowed some original information from my other guide
https://gtm.you1.cn/sharedfiles/filedetails/?id=2306239233

We start with simply cross multiplication equation with given data

(X is unknown argument)

$9.99 - 25g bars (that is the smallest gold bar pack without discount)
$2.99 - X (smallest red shark card without discount is 100k GTA$ for 2,99 USD)

We find out

$9.99 = 25g bars = GTA$334,113.7
$2.99 = 7.48248 bars = GTA$100000


To find out what GTA$ are worth against this we do

$9.99 X=334,113.7
$2.99 100000


$100000/3= 33,333.3 GTA$ is 1 USD

33,333.3 GTA$ - 1 USD
1 GTA$ - X


1/33.333.3 = 0.00003 USD (is the worth of 1 GTA$ in USD)


GTA$ 334,113.7 divided by 25 g bars =

1 gold bar is 13,364 GTA$

1/13364=

0.00007 gold bar is 1 GTA$


From previous guide on RDO currency conversions

33,333.3 GTA$ 1 USD
61.5 RDO$ 1 USD

we divide GTA$ by RDO dollars to see how many RDO dollars fit inside GTA dollars and we find out that

1 RDO$ is worth 542 GTA$

1/542=

0.001845 RDO$ is 1 GTA$

1 gold bar is 13,364 GTA$
0.00007 gold bar is 1 GTA$

1 USD $ is 33,333.3 GTA$
0.00003 USD1 $ is 1 GTA$

1 RDO$ is worth 542 GTA$
0.001845 RDO$ is 1 GTA$

You can count how much you've made yourself using the information given


1235.94 G Bars x 13,364 means my gold bars are worth = 16,517,102 GTAO $

160204.23 RDO$ Dollars or dollars earned during Wild West times are worth = 86,830,692 modern world GTA$ 66 GTA cents