{"content":"あれです．3を法とすると，掛け算では2の逆数は2です，ってやつです．モジュラ逆数．もうちょい例を挙げると，5を法とすると，4の逆数は4で，2の逆数は3です．","created_at":1758127062,"id":"d6fe1a761490386e3afb7261e8d1751119559370bb6f7ac81b1727b68f5c75a4","kind":1,"pubkey":"a6f1f450080b65ba75da8ac7328f91c94f8314b2cc4aa719c516852a29388f0b","sig":"2d92fe25e594f658a8c5a783f80093262248545d36466204b06013fe95eafe1bd1fd3b1ca166ab96edd6433d851cf5816f2dad7aa2aea3cab05e2748f962b893","tags":[]}