Calculate the additional cash needed for the six months. When there is a cash shortfall (the shortfall/surplus cash calculation is less than zero), additional cash must be obtained from a loan to cover all of the monthly expenses. Additional Cash Needed is equal to any cash shortfall. Additional Cash Needed is zero if there is a cash surplus. Additional Cash Needed should be a positive number even though a shortfall will be a negative number in the model (row 28). Use the ABS function to make the value positive. Reuse your function to complete the Additional Cash Needed for each month