|2-512||2000||2000||-1/21/27|
|-37-14|=|-3-1/21/27|=|0-1/21/27|=2|7/2-1/22|
|5-927||57/2-1/22||07/2-1/22||4-1-2|
|4-612||44-1-2||04-1-2|
|1-1-14||100||100|
=-1/2*|7-14|=-1/2*|76102|=|-1/2*|06102|
|4-1-2||4354||0354|
=-1/2*|6102|=-1/2*(6*54-102*3)=-1/2*(324-306)=-1/2*18=-9
|354|