Multiplication and then sum in Android? (GET EDITTEXT) (JAVA) : I need to get one number from the edit text and multiplicate for a standard number and then sum with a number of another edit text this also multiplicate for a standard number. Then i have to show the value when i click a button. All in Java with android studio

the calculation is:
(editextnumber*standardnumber)+(editextnumber*standardnumber)