How to calculate Starcash ROI:

1.27 per block

67 secs per block

1289.55 blocks per day

1637.73 STARS gen per day

65% of 1637.73
= 1064.53 STARS per day for MN rewards

/number of masternodes
= X
X * 365 for STARS per node per year
= Y
Y / 7280 collatarel * 100
= % ROI per year

At the moment there are 14 Masternodes online so the ROI is: 381%