How do I display outcome in my textEdit box from application

Question

Im trying to display the conversion of currency in my textEdit widget. I converted my .ui to .py and am using radioButtons to select currencies, I can input my number and select my currencies but it wont display the calculated outcome Here is the last bit of my code not including setup_ui:

 def convert_currency(self):
    conversion_rates = {
    "$ US":1.0,
    "GB P":0.72,
    "Euro":0.85,
    "Yen":112.54,
    "Peso":20.15,
    "Krona":8.47
}
    self.pushButton.clicked.connect(self.convert_currency)
    selected_currency = self.radioButton.currentText()
    conversion_rate = conversion_rates.get(selected_currency, 1.0)
    latte_cost = 3.50
    cost_in_selected_currency = latte_cost * conversion_rate
    self.result_label.setText(f"cost of latte:{cost_in_selected_currency}{selected_currency}")

if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    Form = QtWidgets.QWidget()
    ui = Ui_Form()
    ui.setupUi(Form)
    Form.show()
    sys.exit(app.exec())