Since one billion (1,000,000,000) is one thousand times greater than one million (1,000,000), there are one thousand millions that are contained in one billion.
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650 Million is 0.650 Billion. 1 Billion is 1000 Million.
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1. Enter the value, in millions, into the calculator. Check the number is correct, with the right number of digits and the decimal point in the correct place. If you're using scientific
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A million  is 1,000,000. A billion  is 1,000,000,000 (1000 times bigger)
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