Multiplicação entre QlineEdit

Tenho essas linhas de comando, mas contem algum erro.

Line1 * Line2
botão: multiplica
resutlado: line3

from PyQt6 import QtCore, QtWidgets

class Ui_MainWindow(object):

def setupUi(self, MainWindow):

MainWindow.setObjectName(“MainWindow”)

MainWindow.resize(530, 319)

self.centralwidget = QtWidgets.QWidget(parent=MainWindow)

self.centralwidget.setObjectName(“centralwidget”)

self.line1 = QtWidgets.QLineEdit(parent=self.centralwidget)

self.line1.setGeometry(QtCore.QRect(50, 80, 81, 41))

self.line1.setStyleSheet(“font: 75 24pt "MS Shell Dlg 2";”)

self.line1.setObjectName(“line1”)

self.line2 = QtWidgets.QLineEdit(parent=self.centralwidget)

self.line2.setGeometry(QtCore.QRect(170, 80, 81, 41))

self.line2.setStyleSheet(“font: 75 24pt "MS Shell Dlg 2";”)

self.line2.setObjectName(“line2”)

self.line3 = QtWidgets.QLineEdit(parent=self.centralwidget)

self.line3.setGeometry(QtCore.QRect(310, 80, 113, 41))

self.line3.setStyleSheet(“font: 75 24pt "MS Shell Dlg 2";”)

self.line3.setObjectName(“line3”)

self.multiplica = QtWidgets.QPushButton(parent=self.centralwidget)

self.multiplica.setGeometry(QtCore.QRect(160, 130, 91, 41))

self.multiplica.setStyleSheet(“background-color: rgb(255, 170, 0);\n”

“font: 18pt "MS Shell Dlg 2";\n”

“color: rgb(0, 0, 0);”)

self.multiplica.setObjectName(“multiplica”)

self.label = QtWidgets.QLabel(parent=self.centralwidget)

self.label.setGeometry(QtCore.QRect(140, 80, 21, 41))

self.label.setStyleSheet(“font: 75 28pt "MS Shell Dlg 2";”)

self.label.setObjectName(“label”)

self.label_2 = QtWidgets.QLabel(parent=self.centralwidget)

self.label_2.setGeometry(QtCore.QRect(270, 80, 21, 41))

self.label_2.setStyleSheet(“font: 75 28pt "MS Shell Dlg 2";”)

self.label_2.setObjectName(“label_2”)

MainWindow.setCentralWidget(self.centralwidget)

self.retranslateUi(MainWindow)
    QtCore.QMetaObject.connectSlotsByName(MainWindow)

def retranslateUi(self, MainWindow):
    _translate = QtCore.QCoreApplication.translate
    MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
    self.multiplica.setText(_translate("MainWindow", "Calcular"))
    self.label.setText(_translate("MainWindow", "X"))
    self.label_2.setText(_translate("MainWindow", "="))

    self.multiplica.clicked.connect(self.formula)
def formula(self):
    preco=int(self.line1.getText())
    desc=int(self.line2.getText())
    pago = preco * desc
    self.line3.setText(str(pago))

if name == “main”:
import sys

app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec())

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