If you mean what is 123,456,789 in Roman numerals then it probably works out as follows:-
(CXXIII)M(CCCCLVI)DCCLXXXVIIII
Numerals in brackets indicate multiplication by a thousand and superscript numerals indicate multiplication by the value of that particular numeral.
Hence:-
(CXXIII)M = 1,000*1,000*123 = 123,000,000
(CCCCLVI) = 1,000*456 = 456,000
DCCLXXXVIIII = 789
1,500,000 - one million, five hundred thousand.
____ MCD
One million five hundred twenty thousand is 1,520,000
Eight million, nine hundred and ninety-nine thousand, nine hundred and ninety-eight in numerals is: 8,999,998
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Four hundred thousand million. (Ok, in Arabic numerals 400,000,000)
1,500,000 - one million, five hundred thousand.
____ MCD
One million, seven hundred thousand written in numerals are 1 700 000.
One million five hundred twenty thousand is 1,520,000
38,460,000
6406004
How to write 3.5 million in words
Eight million, nine hundred and ninety-nine thousand, nine hundred and ninety-eight in numerals is: 8,999,998
It is IVIIIVICCCXV.
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The numerals for the number number two million four hundred one thousand two are written as: 2,401,002