Вычислите значение выражения: 1/3•5+2/5•7 + ••• + 2/29•31

1/3*5+2/5*7+2/29*31

1. (1//3) * 5+2/5*7+2/29*31

2. (5//3) + 2/5*7+2/29*31

3. (5//3) + 0.4*7+2/29*31

4. (5//3) + 2.8+2/29*31

5. (67//15) + 2/29*31

6. (67//15) + (62//29) * 31

7. (67//15) + (62//29)

8. 2873//435