Convert from Decimal (Base 10) to Roman (Rom)

¿How to convert from Decimal (Base 10) to Roman (Rom)?

To convert a decimal number to a Roman numeral, you need to follow a series of rules:

Roman Numerals and Their Basic Rules.

1. The Roman numerals I, X, C, and M can be repeated up to three times when writing a composite Roman numeral.
2. The Roman numerals V, L, and D cannot be repeated.
3. If a composite Roman numeral has a smaller number to the right than to the left, then both are added. Example: XI: The number on the right (I = 1) is smaller than on the left (X = 10), so they are added, i.e., XI = 11.
4. If a composite Roman numeral has a larger number to the right and it is I, X, or C, then the left is subtracted from the right. Example: IX: The number on the right (X = 10) is larger than on the left (I = 1), and it's I, so the left is subtracted from the right, i.e., IX = 9.
5. If a Roman numeral has a line over it, its value is multiplied by a thousand. Example: IX

   : the number is 9,000, as it's the Roman numeral representing 9 and the line over it multiplies it by a thousand.

Steps to convert the decimal number 159 into a Roman numeral:

1. Break down the number into units, in this case: 100, 50, and 9.
2. Translate using the table, each decimal number to its equivalent Roman numeral. In this case: C=100, L=50, and IX=9.
3. Write the result from largest to smallest unit or from left to right: CLIX.

As a result, the decimal number 159 is equal to CLIX in Roman numerals.