414+303=?,250+420=?,972+732=?
744-77=?,922-640=?,1300-784=?
54+?=881,229+?=772,1264+?=1612
61*7=?,9*51=?,893*4=?
405/3=?,448/8=?,894/6=?
---
?-279=895-457,117+180+466+395=?
703-253=?+331,515+535+366-1219=?
247+?+312=943,1090+551-769-649=?
292+?-555=417,1913-648-500-459=?
电热毯烤鸡