Lat & Lon from address to calculate straight line distance

Hello

Love the plug-in, very helpful.
Unforunately I don’t have much experience coding, but I am trying to take the Latitude and Longitude from the autocompleted address and calculate the ‘straight-line’ distance using the Haversine equation..
Basically I need help in extracting the Lat and Long from the autocompleted address into another variable which I can then use in the Haversine equation in order to show the user the straight line distance.

Any help is greatly appreciated!!!

Thanks in advance, Nick