Lets make little math 1 minute calling IPRN earning is 0.1$ and you can call 6 multiple calls in 1 time. And when I started doing this I make calls 16 hours every day fully automatic.
So it means 0.1$x6=0.6$ per minute, 0.6$x60min=36$ per hour and 36$x16hours= 576$ you can earn in 1 day sounds good huh?