Number line problem / quality of the door window-integrated car number * 1000 + + online self-test question number line problem / quality final inspection window-door car number 1000 *
Number of online problems / comprehensive quality door through the door number of cars , 1000 , on-line self-inspection problems , offline problems / final inspection quality door through the number of cars . . . 1000
Number of online problems / number of comprehensive quality door crossing vehicles * 1000 + online self inspection problems + number of offline problems / number of final quality door crossing vehicles * 1000