マイペース、マイ・スタイル！　～日本語がぺらぺらになるには～

帰らせていただきます。
I'm outta here... (After hearing they'll have to do some difficult math.)
I'm out...
Well, that's my cue (to get out of here)...
Oh, look at the time...

心配ご無用！
There's nothing to it!
No need to worry!
"Have no fear!"