(1/12 + 1/13) разделить (1/12 - 1/13) * (1/10)в кубе

Выражение: (1/12+1/13)/(1/12-1/13)*(1/10)^2

ответ: 0.25

1. 1/12=(1//12)
2. 1/13=(1//13)
3. (1//12)+(1//13)=(25//156)
4. 1/12=(1//12)
5. 1/13=(1//13)
6. (1//12)-(1//13)=(1//156)
7. (25//156)/(1//156)=25
8. 1/10=0.1
1.00|1_0_ _
1_0_ |0.1
0
9. 0.1^2=0.01
X0.1
_0_._1_ _
01
0_0_ _ _
0.01
10. 25*0.01=0.25
X0.01
_ _2_5_
005
0_0_2_ _
0.25