By this standard, the same karat as keicho-gin, which was 80% of the cupellated silver, was 1.1X0.800.88 where it was bought by 0.88 of the weighted value of chogin..
これを基準に慶長丁銀と同品位、すなわち80%の灰吹銀は1.1×0.800.88となり、0.88倍の量目の慶長丁銀で買い取られた。