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.
"Wow! You scored a one hundred on that test?" "Naturally."
It's only natural that you must practice kanji little by little every day in order to become good at it.
You are very lucky to have such a lovely wife. Don’t take her for granted.