P.s // дробь

Решаем по действиям:

1) 34.1=341//10

2) 18.4=184//10

3) 184//10=92//5

4) (341//10)-(92//5)=(157//10)

5) 0.7=7//10

6) (7//10)*(157//10)=(1099//100)

7) 0.5=5//10

8) 5//10=1//2

9) 18.6=186//10

10) 186//10=93//5

11) (1//2)*(93//5)=(93//10)

12) (1099//100)+(93//10)=(2029//100)

13) 9.8=98//10

14) 98//10=49//5

15) 1.6=16//10

16) 16//10=8//5

17) (49//5)+(8//5)=(57//5)

18) 1.4=14//10

19) 14//10=7//5

20) (57//5)*(7//5)=(399//25)

21) (2029//100)-(399//25)=(433//100)