The Romans and Numerals

The Romans, known for their engineering, warfare, and commerce, had a complex numeral system that hindered their mathematical prowess. Roman numerals, using letters for numbers, were cumbersome for arithmetic. Despite this, Romans excelled in engineering, likely borrowing Greek mathematical knowledge. Roman numerals, though outdated, are still used today for hours and years, leaving a lasting legacy.

How did the Romans manage to excel in engineering despite their complicated number system?

In what contexts are Roman numerals still used today?