The Roman numeral MMMCCCXCVIII represents the number 3,398. Here’s the breakdown of this Roman numeral:

• MMM represents 3,000.
• CCC represents 300.
• XC represents 90.
• VIII represents 8.

So, when you add these values together, you get:

MMM (3,000) + CCC (300) + XC (90) + VIII (8) = 3,000 + 300 + 90 + 8 = 3,398.

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