Represents any element containing number content. Default search finds the first occurring element.

<span id="amount">15</span>
using Atata;
using _ = SampleApp.SamplePage;

namespace SampleApp
{
    public class SamplePage : Page<_>
    {
        [FindById]
        public Number<_> Amount { get; private set; }
    }
}
Go.To<SamplePage>().
    Amount.Should.Equal(15);

Supports [Format] and [Culture] settings attributes.