Crunch a number,

 grinds your gears

 Crunch a number,

 root out a stiff

 then tightly squeeze

 Wretch after wretch

 

 Non-expressive matter

 designated to perish

 Smash a single digit

 Wretch follows wretch

 

 Cleave to progress, rotate the cull

 Cleave to progress, this ranks

 lower than collateral

 Louse after louse

 

 Non-reflective minions

 who must labour and perish

 Smash a single digit

 Louse follows louse

 

 As there is no lower to plunge

 No heed is paid to consequences

 There's no sum when

 you're not a part