1. Twelve million four hundred three thousand five hundred sixty seven.
2. do yourself
3. do yourself
4. do

Answer:

12,403,567 - Twelve million, four hundred three thousand, five hundred sixty-seven

2,110,983 - Two million, one hundred ten thousand, nine hundred eighty-three

21,980,888 - Twenty-one million, nine hundred eighty thousand, eight hundred eighty-eight

5,455,034 - Five million, four hundred fifty-five thousand, thirty-four

123,291,550 - One hundred twenty-three million, two hundred ninety-one thousand, five hundred fifty

5,107,024 - Five million, one hundred seven thousand, twenty-four

6,007,990 - Six million, seven thousand, nine hundred ninety

2,460,540 - Two million, four hundred sixty thousand, five hundred forty