How can I format a products formatted price?

New to Corvid, I have the following code, the console logs work, I am just having an issue setting the actual price in the document. could anyone help point me in the right direction?

$w.onReady(function () {
  $w('#productPage1').getProduct()
  .then( (product) => {
 let oldformattedPrice = product.formattedPrice;
 let newFormattedPrice = oldformattedPrice.split(".")[0].toString();
    console.log(newFormattedPrice)
    product.formattedPrice = newFormattedPrice;
  } )
  .catch( (error) => {
    console.log(error);
  } );
});