Need to be able to pull variable from a Cisco router and use that in a config change template

Good morning

I need to be able to pull the cisco router's default gateway address and use that to create a static route, ie

abc-de-01234-01#show ip route | inc resort

Gateway of last resort is 44.44.44.44 to network 0.0.0.0

Then use that 44.44.44.44

conf t

ip route 11.11.11.0 255.255.255.224 44.44.44.44

As part of a config change template.

Regards

Nigel