(125698+236987+365149+28356):(125698+236987+365149+28356)=125698+236987=362685+365149=727834+28356=756190:756190=1
365987:(489673-489672)=489673-489672=1=365987:1=365987
(564328-564328):(125689-124321)*(654928-654823)=564328-564328=0, 125689-124321=1368, 654928-654823=105,
0:1368*105=0