This is the formal notation to output the value of $c . It is used to prevent ambiguity with surrounding text.
Velocity Template Language (VTL): An Introduction. The Velocity Template Language (VTL) is meant to provide the easiest, simplest, Apache Velocity Apache Velocity Engine VTL Reference #set($c=922488346 928282912)${c}$c
In most Apache Velocity Engine versions, this would trigger a ParseErrorException because of the unexpected space between the two numbers. This is the formal notation to output the value of $c
Verify if these numbers are intended for a specific tool like the Marketo Velocity Scripting engine, where strict syntax rules often apply. Apache Velocity Engine - User Guide #set($c=922488346 928282912)${c}$c