90,000,000,000
The standard (numeral) form is 27,490,000,008
The standard form of 1.5 billion is 1,500,000,000
Four hundred billion ninety million in standard form = 4.0009 × 1011
8,000,000,000
7,750.000,000
8,000,000,000
The standard form is 290,800,000
1,500,000,000 or 1.5*109 in standard form
The standard form is 8,008,000,000
The standard form is 400,090,000,000
The numeral 9999999999 is 9,999,999,999 and is written "nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred and ninety-nine."
2 and a quarter billion or 2,250,000,000 = 2.25x109.