89*90+109-89+1997:45+67-689*6=? Help Rezhit!
89*90=8010 1997÷45≈44,38 689*6=4134 8010+109=8119 8119-89=8030 8030+44,38=8074,38 8074,38+67=8141,38 8141,38-4134=4007,38