Handsdown it has pretty good ui. But i regret buying it, because i can't calculate % seriously why isn't on the front. I have to press folder button to find it.

Handsdown it has pretty good ui. But i regret buying it, because i can't calculate % seriously why isn't on the front. I have to press folder button to find it. additionally, I am baffled why do i have to press = to find end result, it should automatically calculate as i enter figure just like my $3 citizen calculator does.