It is: 300,000
six hundred three million and four thousand in number is: 603'004'000
I would write 390,600,321 as: three hundred and ninety million, six hundred thousand, three hundred and twenty-one.
350,000+350,000=700,000
2,760,325 is two million seven hundred and sixty thousand three hundred and twenty five in numbers
300,000
Seven million, three hundred twenty-eight thousand.
Five hundred six million forty-one thousand three in numbers 506,041,003
330,000
350
300,000,000,000
302,000
350,000