Fractions of terms of punishment.

Querist :
Anonymous
(Querist) 17 May 2011
This query is : Resolved
57. Fractions of terms of punishment. -- In calculating fractions of terms of punishment, 4[ imprisonment] for life shall be reckoned as equivalent to 4[ imprisonment] for twenty years.
55. Commutation of sentence of imprisonment for life.-- In every case in which sentence of 4[ imprisonment] for life shall have been passed, 5[ the appropriate Government] may, without the consent of the offender, commute the punishment for imprisonment of either description for a term not exceeding fourteen years.
Query: I understood the meaning of section 55 but confused on section 57 as what does it means is it relevant with section 55 or not which will prevail whether 14 years or 20 years pls clarify me in detail confused whar does the section 57 wants to convey ?
Thanks