Add spaces: Icaughta6-7kilogramtuna.Iatesome(/apart)ofitrawforbreakfastandherelateafternoonIatetherest(ofit).

Answer: I caught a 6-7 kilogram tuna. I ate some(/a part) of it raw for breakfast and here late afternoon I ate the rest (of it).

Add spaces: ZFWG1156-speedfullyautomatic»ERGOPOWER«withfullelectroniccontrol.

Answer: ZF WG115 6-speed fully automatic »ERGOPOWER« with full electronic control.

Add spaces: TheCISAisanotherdesignationwhichisgloballyrecognizedinfieldsofauditandinformationsystemssecurity.

Answer:
The CISA is another designation which is globally recognized in fields of audit and information systems security.