I CAN'T GET R COEFFICIENT 7. THE TIME I RECEIVE IT GIVES AN ERROR THAT R COEFFICIENT IS 7 AND THE RATIO OF CURTAIN CUTTING FORCES AND BASE TOTAL CUTTING FORCES IS HIGHER THAN 0.75. I ADDED THE PROJECT, I HAVE TO ENTER THE ROOM ON MONDAY.. LOTS OF PRAYER TO THOSE WHO WILL HELP. THIS OPPORTUNITY WILL NOT MISS