scientific notation converter
http://cbsetuts.blogspot.in/2018/01/scientific-notation-converter.html
https://sites.google.com/site/aplustoppernotes/scientific-notation-converter
Converting To and From Scientific Notation
Converting To Scientific Notation
To Change from Standard Form to Scientific Notation:
Place the decimal point such that there is one non-zero digit to the left of the decimal point.
Count the number of decimal places the decimal has "moved" from the original number. This will be the exponent of the 10.
If the original number was less than 1, the exponent is negative; if the original number was greater than 1, the exponent is positive.
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