How to perform mathematical operation within the MVC view

Question

I am creating a web application MVC 5 for studies and I have a question: it is possible to perform a mathematical operation in view?

I wanted to multiply line 16. What would be the solution?

@foreach (var item in Model) {
<tr>
    <td>
        @Html.DisplayFor(modelItem => item.users.first_name_user) @Html.DisplayFor(modelItem => item.users.last_name_user)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.product.name_product)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.quantity)
    </td>
    <td>
        R$ @Html.DisplayFor(modelItem => item.product.price)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.quantity) * @Html.DisplayFor(modelItem => item.product.price) ******Preciso Realizar essa multiplicação****
    </td>
    <td>
        @Html.ActionLink("Editar", "Edit", new { id = item.id_order }) |
        @Html.ActionLink("Detalhes", "Details", new { id = item.id_order }) |
        @Html.ActionLink("Excluir", "Delete", new { id = item.id_order })
    </td>
</tr>
}

I tried to use the code that way:

R$ @Html.DisplayFor(modelItem => item.quantity * item.product.price) 

Made that mistake:

Answer 1

The ideal is not to do processing in view, then the correct solution is to create the model that already includes the calculated total value as a field of the model (may be a viewmodel if you do not want to do in the normal model), and there you can easily use.

If you want the shape incorrect, but it works, you can do the account before and then use the result, something like this:

@{
foreach (var item in Model) {
    var total = item.quantity * item.product.price;
    ...
    @Html.DisplayFor(modelItem => total)
}

I put in the Github for future reference.