Vocabulary
用を足す
ようをたす
to take care of some business; to go on an errand
expression
verb
Example sentences
とにかくメシ・・・といきたいところだが、その前（まえ）に用（よう）を足（た）すことにした。
Anyhow, lunch ... is where I wanted to go but I decided to go to the toilet first.