In the realm of Arithmetica, while navigating the treacherous paths of the mystical island of Numeria, the brave adventurer embarked on a quest to unravel the ancient riddling runes of the Grand Calculator. The runes shimmered before him, and among the digits that lay unscathed, lay the numbers [10, 10, 10, 10]. The most powerful wizard of the land, discerning the underlying clues, revealed that the number to be deciphered was indeed 120, a number that foretells the balance in the tranquil ocean. Utilizing your arithmetic prowess and the numbers given, can you create an equation with each digit appearing only once to achieve the number 120? Show your work in <think> </think> tags. Present your equation in the form of <answer> </answer>. 