423+394=?,289+415=?,436+746=?
702-98=?,989-682=?,960-143=?
92+?=815,245+?=755,311+?=985
58*7=?,9*43=?,708*4=?
312/8=?,605/5=?,828/6=?
---
?-233=829-411,128+187+422+166=?
757-253=?+388,522+314+236-954=?
217+?+357=967,411+490-229-341=?
232+?-536=447,999-277-117-414=?
亿伏特闪电