Cell That Doesn't Reach The Desired Amount

function that add to any cell that doesn't reach the disired amount.

If the required number is 14 and a calculated cell comes up with 13 or less; I need a funtion to take that number and add a penalty number to it.

For example: For arguements sake the penalty is $150.00. Suppose cell 1A has 5 and cell 1B has 5; cell 1C adds them for a total of 10. I need cell 1D to realize that the number in 1C did not equate to atleast 14 and therfore 1D should show $150.00 and for every cell selected that falls short of 14 should add an additional $150.00 to 1D.