Rearranging the letters of 'Twelve infinity times One infinity' (Highest maths) gives:
Eleven infinity times Two infinity.
(by Jim Banholzer by hand) (2018) (pending approval)
Other related anagrams without their own page:
"Twelve infinity minus One infinity" -> "Eleven infinity + Two infinity in sum." (by Jim Banholzer by hand) (2018) (pending approval)
"Wrack your brain" -> "Ruby crania work." (by Jim Banholzer) (2018) (pending approval)
"Eleven Million plus Two Million" -> "Twelve Million plus One Million." (by Jim Banholzer by hand) (2018) (pending approval)
"I know nothing!" -> "Thinking no ow!" (by Jim Banholzer) (2017) (pending approval)
"Eleven Hundred plus Two Hundred" -> "Twelve Hundred plus One Hundred." (by Jim Banholzer by hand) (2018) (pending approval)
"Eleven Hundred plus Two Hundred plus eleven plus two" -> "Twelve Hundred plus One Hundred plus one plus twelve." (by Jim Banholzer by hand) (2018) (pending approval)
"Eleven Thousand plus Two Thousand" -> "Twelve Thousand plus One Thousand." (by Jim Banholzer by hand) (2018) (pending approval)