Extract values from a cell into separate rows

Hi Guys 
i have csv file and one of the cell (Item Sent)  is having multiple values.

How we can extract Item Sent values to separate rows altogether.

Desire output:

RecordID    Item Sent

LAB12792     6

LAB12792     100

LAB12792     130

LAB12792     131

LAB12792     132

Any help is greatly appreciated.