I have an array like this

```
public List<Application> all_roads = new List<Application>();

```

And an object with fields:

```
public string point_of_distination;
public uint length_of_route;
public double price;
public string our_drv_name;
public string our_drv_surname;
public string our_bus_model;
public double gen_ticket_price;
public short cur_year;
public byte cur_day;
public byte cur_month;
public double tour_consumption;

```

I would like to count general sum of `tour_consumption` from all objects.
How should I write `foreach` loop for this ?
Please, help me.