Number Format

I need to display in my table a value that I take from my database (inventory, price column).

Ex.
R $ 59.90

$price = number_format($this->data("Est.price"));
echo $price;

But it doesn't display anything
​
How can I solve?

$this->get is for {var:}'s, $this->data is for {data:}'s.

I managed to solve, now I need to display a simple calculation on a table in the index event

Quantity x price.

How can I get these two dice?

I tried several ways and failed.

echo $this->get('thething') * $this->get('the_other_thing');