Regex for monetary values twice in string

Question

I have this regex to extract monetary values from strings:

/[$R]\s*(\d*,?\d+)?\b/g

It is working fine. The new problem is, sometimes I will have two monetary values in the same string. For example:

Your purchase of R$ 447,71 was accepted. Your new balance is R$ 20,31.

So, how could I do in order to extract both values or at least extract first one? Because my regex extracted the last one...

The function:

  treatMonetary(monetry: string) {
    let resultString = '';
    var res = monetry.match(/[$R]\s*(\d*,?\d+)?\b/g);
    res?.forEach(element => {
      if (element.includes("$")) {
        resultString = element?.replace('$', '')?.replace(" ", "")?.replace("R", "")?.replace(',', '.');
      }
    });
    return resultString;
  }