calculate, divining, number, abacus, probability
JLPT2 G2 S14 F361
祘 is a depiction of calculating sticks used by being placed in close, circular formation. The relevant seal inscription form of 筭 is an abbreviated form# of 祘 + an element combining 竹 bamboo and 廾 pair of hands → arrange bamboo calculating sticks in making calculations → *calculate*; *count* → *estimate*; *number*; *enumerate*; *rank*. The present form substitutes an abbreviated form of 具 (tool) in place of the calculating sticks element.
[Full Kanji Etymology List]