Using two unit multipliers for this problem is a waste of time -- sort of like driving over to the East side of town and then turning around and going to your appointment on the West side of town when there was no good reason for you to be on the East side in the first place.
Tell me what two unit multipliers you would like to use and I'll show you how to set it up.
John
My calculator said it, I believe it, that settles it