It is 1020000000.
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It is: 102
20.5 billion = 20,500,000,000
3,018,000,011
7,000,000,000
To round 102.4 to the nearest whole number, we look at the decimal part, which is 0.4. Since 0.4 is greater than or equal to 0.5, we round up the whole number part, which is 102. Therefore, 102.4 rounded to the nearest whole number is 103.