engr

Dear All I need to calculate the efficiency by following formula eff= total products / schedule time x set speed x 60 this value should be displayed in HMI for total products i have a data block db1.dbd5 which increments when machine runs and i have created new db for efficiency db1.dbd30 as total products db keeps on updating it is difficult to divide and display so please help me to display effiecincy on HMI so guide me step by step to which instruction i should use. Thank you