主题：请教

前2020个“鼠数”中去掉开头的0，剩下的数从左至右写成一个数 A=220222002022202222000?。

我参考了一下这段代码

Dim dt As Date = Date.Now
Dim v As String
Dim s As new StringBuilder
For i As Integer = 1 To 100000
    s.AppendLine("abc")
Next
v = s.Tostring
Output.Show((Date.now - dt).Totalseconds)

但不知怎么改，请教，