Answer:
because Science and technology gives you solid proof. ... But that is not the case with humanity and social sciences. It is perspectives, attitudes, and emotions.
The Abbasids established the new position of vizier to delegate central authority, and delegated even greater authority to local emirs. The Abbasid dynasty ruled as caliphs from their capital in Baghdad, in modern Iraq, after taking over authority of the Muslim empire from the Umayyads in 750 CE.
You take 800 times 22% so .22 and you get 176 move the decimal over one place and get 17.6$