..............................=9,782
1) 12,61008 :5,04=2,3352
2) 79,235:6,5=12,19
3) 2,3352+12,19=14,5252
4) 14,5252*6 1/2=14,5252*6,5=94,4138
5) 94,4138 - ( -4,502)=94,4138+4,502=98,9158
6) 512,9:25=20,516
7) -108,405 :6 3/5= - 108,405 : 6,6= - 16,425
8) 266,84:78=3,42
9) - 16,425 +3,42= - 13,005
10) -13,005:1,25= - 10,404
11) 20,516+( -10,404)=20,516 - 10,404=10,112
12) 98,9158 : 10 112=9,782