かい
times
One turn round and then another, and somebody counting them. Kai かい is counting: three a week, to that shop: かい.
度 ど also counts occasions. 回 is the everyday counter for how many times.
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Emaki is not affiliated with, or endorsed by, Kaishi 1.5k or its authors. The word, reading and meaning come from the Kaishi 1.5k deck, used with their permission. The mnemonic, the note and the kanji breakdown are original work, published under CC BY-SA 4.0.