Noun
ざんがく
残額は五百円あるので、次の旅行に繰り越すこともできるし、半日市内バス観光をすることもできます。
The balance is 500 yen, so we could carry it over to the next trip or we could also go on a half-day bus tour of the city.
The remainder amount is the remaining amount.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.