Enigmarchaeologists uncovered an ancient Roman precursor to our familiar, and comparatively dignified,   SEND + MORE = MONEY alphametic.
TEE + HEE + HEE + HO + HO + HEH + OH + ME + OH + MY + HMM   =   OH + HEY + AHA
What is that equation in substituted Roman numerals?
And just for giggles, what does   TEE + HEE by itself equal with the same substitutions?
Each letter— A, E, H, M, O, T and Y—stands for a different Roman digit—  I, V, X, L, C, D or M — in a correspondence to be deduced.   Only standard Roman numerals are in play, not alternative forms.
For example . . .
. . . If the puzzle were   GIN + FIG   =   FUN,   its letters could be substituted to become   XLV + DLX   =   DCV,   which amounts to   45 + 560 = 605   in Arabic numerals.
Example Substitutions Roman Arabic F --> D GIN U --> C XLV 45 + FIG I --> L + DLX = + 560 ------- G --> X ------- ------- FUN N --> V DCV 605