1)71,7*9,01=646,017
2)2,3456789*0,3=0,70370367
3)21,004*6,5=136,526
4)45,34*20,01=907,2534
1) 5700*0,105-87*1,7+8009:1000-8009*0,001=450,6
57000*0,105=598,5
87*1,7=147,9
8009:1000=8,009
8009*0,001=8,009
598,5-147,9+8,009-8,009=450,6
2) 5867:100+78,55*2,08+51,09*3,4-586,7*0,1= 337,09
5867:100=58,67
78,55*2,08=163,384
51,09*3,4=173,706
586,7*0,1=58,67
58,67+163,384+173,706-58,67=337,09