$\"\"$

The standard form is $\"\"$ .

The standard form to scientific notation:

Move the decimal point until it is to the left of the first nonzero digit.

The result is a real number a.

$\"\"$ .

There fore, $\"\"$ . $\"\"$

The decimal point moved 9 places to the left, so $\"\"$ . $\"\"$

If the decimal point moved left, write the number as $\"\"$ .

$\"\"$ . $\"\"$

Remove the unnecessary zeros. $\"\"$ .

$\"\"$ .

The scientific notation is $\"\"$ . $\"\"$

The scientific notation is $\"\"$ .