took an eternity to figure out how to respond to

[Ksjusha]

Please, help to translate.

Phrase is used in the following sentence:
"He took an eternity to figure out how to respond to ..."
Pomogite! Ay-y-y, znatoki!

Thanks in advance
e-mail :"[e-mail]"

[LY]

Ему потребовалась целая вечность, чтобы сообразить, как ответить.
Ну чего кричать-тА! :)