Moving decimal from the right in PHP

Question

I have large numbers and their decimals points. Here are some examples and what should return:

Number: 300000
Decimals: 8
Should return: 0.00300000

Number: 7000         


        

Answer 1

Divide by 10 to the power of the number of decimals:

$result = $number / (10 ** $decimals);

Answer 2

Divide by ten to the power of decimals?

$n = 700000000;
$d = 8;

Echo $n/pow(10,$d);

https://3v4l.org/MdoW1