ついでに
tsuide ni
while at it; on the occasion of
[While (you're at it); On the occasion of]
Connection: Verb dictionary form / た-form / Noun の + ついでに
Usage: Doing something extra while doing something else. The main action is the occasion for doing an additional, secondary action.
Examples:
買い物のついでに、郵便局に寄った。(While I was out shopping, I stopped by the post office.)
出張のついでに、観光もした。(While on a business trip, I also did some sightseeing.)
コンビニに行くついでに、ゴミを出してきて。(While you're going to the convenience store, take out the trash.)