1, 750, 000, 000
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As a number 1/4 of a billion is 250,000,000
1.3 billion * 1/4 = 325 million
2 and a quarter billion or 2,250,000,000 = 2.25x109.
What is a quarter of 7.9 billion
One billion seven hundred million in standard form is 1.7 × 109