setCompensation() {
      // set these variables to string, to use toFixed(2)
      let value: string;
      let zero: string;
      if (isNaN(this.campaignModel.per_view_pay) || !this.compensateV) {

          // since toFixed is converting to string, i am trying to parseFloat later.
          zero = (0).toFixed(2);

          // removes the 0 at the end here
          this.campaignModel.viewer_gain = parseFloat(zero);
      } else {

          // since toFixed is converting to string, i am trying to parseFloat later.
          value = (this.campaignModel.per_view_pay / 2).toFixed(2);

          // removes the 0 at the end here
          this.campaignModel.viewer_gain = parseFloat(value);
      }
    }

var result = parseFloat(yourInput).toFixed(2);