1.5 5//19=99/19
2. 3 4//7=25//7
3.(99//19)*(25//7)=(2475//133)
4. 1 15//19=34//19
5.7//25=0,28
6. (34//19)/0,28=(850//133)
7.(2475//133)+(850//133)=25
8. 1 2//3=5//3
9. 25-(5//3)=(70//3)
Q^2=b3/b1=36/81=4/9
q=2/3
b2=b1•q=81•2/3=54
b4=b3•q=36•2/3=24
b5=b4•q=24•2/3=16
S5=81+54+36+24+16=211