### Clue: Qaos regularly going round the bend 1/2 to 1/10 ratio? (8)
### Answer: QUOTIENT 
 ### Explanation: Definition: ratio
 **The 1st and 3rd letters of**(… regularly) **containing**(going round) U(a 180 degree turn;bend) + **the 1st half of**(1/2) "to " + I(Roman numeral for "one") + **anagram of**(/;over) TEN(10). I'm not sure of the latter part of my parsing.