74 is the Hindu-Arabic representation of the number seventy-four. The term Hindu-Arabic defines the system, not the symbols; the symbols are independent of the system. The Hindu and Arabic nations have their own symbols, as do many other regions around the world. However, the Latin symbols are internationally recognised as the standard form of numeric notation, regardless of the system.
You've already wrote it because 74 are Hindu-Arabic numerals
The Roman numerals LXVII=67 in Hindu Arabic numerals.
The Roman numerals of XX are the equivalent of 20 in Hindu-Arabic numerals
The Roman numerals of CCX are the equivalent of 210 in Hindu-Arabic numerals.
The Roman numerals of DCCC are the equivalent of 800 in Hindu-Arabic numerals
You've already wrote it because 74 are Hindu-Arabic numerals
Hindu Arabic numerals are the ones we use. 39 is already in Hindu-Arabic numerals.
The Roman numerals LXVII=67 in Hindu Arabic numerals.
The Roman numerals of XX are the equivalent of 20 in Hindu-Arabic numerals
The Roman numerals of CCX are the equivalent of 210 in Hindu-Arabic numerals.
The Roman numerals of DCCC are the equivalent of 800 in Hindu-Arabic numerals
437 is already in Hindu-Arabic numerals
The Roman numerals of XXVIII are the equivalent of 28 in Hindu-Arabic numerals
dcccxiii in Roman numerals is equivalent to 813 in Hindu-Arabic numerals.
12629 is already expressed in Hindu-Arabic numerals
12629 is already written in Hindu-Arabic numerals.
They are already expressed as Hindu-Arabic numerals.