38K is Far off .
You need to play 64974 (70 Starcoins) games to spin the jack pot wheel.
But you only win 1/8 to win the actual jackpot.
Other Slots on the wheel is 500,500,1000,2000,3000,4000,5000
So assume you need to spin 8 times to hit the actual jackpot. 7 out of 8 times you will get total of $16,000.
As you see on the table. To spin the wheel 8 times you need to play 64974*8 which is 519,792 games. 70 Starcoins equivalent $0.7 so that's
519,792 * 0.7 = $363,854.4
So you invest $363,854.4 to win the jackpot but in a meantime you also get $219,165.83 back because anything above one pair pays something.
So to make this game even you need to win $144,688.57 on your actual jackpot win, but we get $16,000 from 7 times that we spin the wheel but don't hit the jackpot.
so $144,688.57 - $16,000 = $128,688.57
But we all know, jackpot only pays half of the total pool (because all other people who played jackpot within last 12 hours wheel split the other half)
So $128,688.57 * 2 = $257,377.14
You break even when there's $257,377.14 on the jackpot pool.
Which of course happens occasionally, but most of the time just consider you are scratching the speed lottery you know you are losing in a long run, but who knows you might be two in a million lucky