A factor of a number.
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To divide 376 by 93.01, you change the devisor from a decimal to a whole number. Since 93.01 is the devisor, you move the decimal two places to the right to make it a whole number. It is now 9301. Then the same thing you do with the devisor you also do with the dividend. So since you move the decimal two places to make the devisor a whole number, you now have to move the decimal two places on the dividend. Remember, if you do not see a decimal in a number, it is understood to be behind the last digit. Therefore, in 376, the decimal would be understood to be behind the 6 which is the last digit. So to move the decimal two places on the dividend you just add two zeros, making it 37600. So now you are dividing two whole numbers. 37600 divide by 9301. The answer is 4,042 and you round it off to 4.02.
the exact answer is no other # it is right on that point
The number e is what is known as a transcendental number; it would require an infinitely long decimal expansion to give you the exact number.
When it would take much too much time to find an exact number and you don't need it to be exact.
The exact square root is √6 or 60.5. It is an irrational number and so cannot be expressed in exact form as a decimal number.