72+?=616,378+?=839,305+?=988
431-65=?,759-173=?,869-352=?
328+467=?,216+564=?,327+660=?
32/4=?,25/5=?,45/?=?
16*3=?,18*5=?,21*4=?
---
?-327=783-125,147+207+356+201=?
752-285=?+377,343+128+215-582=?
173+?+265=809,428+251-135-439=?
206+?-472=213,999-324-268-312=?
破镜催归客