SSRS Filter Expression

Hello Team ,

In SSRS report how to filter some particular columns

Like i have one department column the values getting in the report like this
10030
10035
20057
5005BR
40034
40065BR
2310.024360.1D2.5120
2310.024368.1D9.5120
2310.024360.1D8.5120
60034
70043
28894BR
4000.507.508505.7000
4000.507.508505.7210
7000.504.50505.7211
PDRCA000
HPWUXE64

Iam getting values in the department column like this in the ssrs report.But i dont want all these columns in the report.I need columns starts with integer numbers like

10030
10035
20057
5005BR
40034
40065BR
60034
70043
28894BR

i need columns exactly like this.Please help me anyone how to do filter these columns in ssrs report.