97,6:(9,4*30,5)*(4,22+1,08)-0,7*0,005:0,5*2800
488/5:286,7×5,3-19,6= =488/5:2867/10×53/10-98/5= =488/5+10/2867×53/10-98/5= =8/5×1/47×53-98/5= =424/235-98/5= =-4182/235= = - 17 187/235