Let's say the original price was "x", thus "x" is the 100%, and we know that 15 is 80% of that, thus
0.0000075 = 7.5 x 10^6 --- Patients Blood
and it has to be between 0.0000006 and 0.000016
so <em>Yes</em> it is normal
They are actually the same.....Hope this helped you!!