The "3" in the number 8,531,980,112.45 is located in the ten millions (10,000,000s) place. This can be determined by counting the number of digits to the left of the decimal.
The first number to the left of the decimal place is in the ones place, followed by the tens, hundreds, thousands, ten thousands, hundred thousands, millions, ten millions place, etc.
To the right of the decimal place, unit placement begins with the tenth place and continues to the hundredth, thousandth, ten thousandth place, etc.
From the . or the decimal representation, the left side values increases by the power of 10 which starts from 0.
For example: 100 = 1xx10^2+0xx10^1+0xx10^0
So the if the first number to the left of the decimal is X, it represents Xxx10^0 .
If the second number to the left of the decimal is Y, then it represents Yxx10^1
If the nth number to the left is P then it would represent Pxx10^(n-1)
Similarly if you consider 8,531,980,112.45;
The number 3 is coming at 8th position when we count from the left of decimal symbol.
So it represents 3xx10^((8-1)) = 30000000
So the answer is 30000000.
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