The way you wrote it is the standard notation. Standard notation means to write the number in its standard form. So, a number such as 150 is simply written as 150 in standard notation. The same applies to decimals.
Unless you are not in the USA, in which case
Standard form (also known as "standard index form" or "scientific notation") requires a single non-zero digit before the decimal point and a multiplier of a power of 10 which gets the decimal point back to where it was in the original number. To calculated the power of the ten count how many digits the decimal point needs to move; if it needs to move to the left make it negative:
0.00105 = 1.05 × 10^-3
How do write 666 in standard form?
It is already in standard form.
That is the standard form!
You write 6.11 in standard form as 6.11 × 100
0.9 that is how you write nine-tenths in standard form
How do write 666 in standard form?
It is already in standard form.
That is the standard form.
That is the standard form!
That IS the standard form.
You write 83,539,131 in standard form as 8.3539131 × 107
You write 7.54103 in standard form as 7.54103 × 100
You write 6.11 in standard form as 6.11 × 100
You write 20.7 in standard form as: 2.07 × 101
0.9 that is how you write nine-tenths in standard form
9+800 is how you write it in standard form
Standard form simply means to write the number: 3,000,296,556