1. Excuse me for leaving for a while .
2. Let me think about what this sentence means.
" 이문장이 무슨뜻인지 생각좀해 볼께요"
3. Just a moment.
don't be surprised even if it can be translated into the same as the first question :)
4. Can you speak it in a easier way ?
"좀더 쉽게 말해주세요"
these ones i just wrote down are found in spoken Korean.