98+?=325,147+?=588,424+?=839
273-76=?,637-173=?,785-321=?
247+138=?,82+518=?,337+529=?
64/8=?,27/3=?,45/?=?
10*5=?,11*3=?,12*2=?
---
?-323=642-125,185+163+234+206=?
636-201=?+139,351+143+218-365=?
147+?+224=785,357+238-165-407=?
253+?-313=216,999-318-252-324=?
楚乡飞鸟没