Formula help

Mansoori M. Zubair M.salim (M.Com / IPCC cum ATC / CA Final)   (208 Points)

17 April 2019  

Dear All

I want excel formula to extract only invoice numbers from Purchase Register export from Tally eg

GST77717 / 2-4-2018
402934 / 2-4-2018
683620 / 2-4-2018
383622 / 2-4-2018
3875 / 2-4-2018
683621 / 2-4-2018
100364 / 2-4-2018
U03-18-1337 / 3-4-2018
U03-18-1331 / 3-4-2018
403008 / 3-4-2018
R/1878 / 3-4-2018

R/1879 / 3-4-2018

I required only invoice numbers for GSTR2 Reco

Please help