如何将答案转换为小数点后两位

这是我的代码，我想要的输出是txtA.Text and txtB.Text保留两位小数。

Public Class Form1
    Private Sub btncalc_Click(ByVal sender As System.Object,
                              ByVal e As System.EventArgs) Handles btncalc.Click
      txtA.Text = Val(txtD.Text) / Val(txtC.Text) * Val(txtF.Text) / Val(txtE.Text)
      txtB.Text = Val(txtA.Text) * 1000 / Val(txtG.Text)
    End Sub
End Class

有关格式选项，请参阅this

Dim v1 as Double = Val(txtD.Text) / Val(txtC.Text) *
                   Val(txtF.Text) / Val(txtE.Text)
txtA.text = v1.ToString("N2");