Need 2 formula regarding daily sales goals & conditional date function

Hi all,

I'm having some difficulties calculating these formulae.

The first issue I'm having is with "sumif("

I'm trying to get a certain column to calculate gross made if the date corresponds to the function.

The formula I'm using is "=sumif('NEW CAR'!A10:A180,"3/1/2016",'NEW CAR'!K10:M180)"

The sheet where the formula is needed is the 'CCH TOTAL' sheet, in the Front Gross column. I need the formula to correspond to the 'NEW CAR' sheet.

It's calculating it at $1,000. The proper sum is $2754.00.

Secondly, I'm trying to calculate the sales goal daily based on the number of working days remaining, and how many units already sold.

Basically, we are trying to hit 152 units sold, and we have 36 sold(broken down into 18 new units, 18 used units, and 4 CPO units.) The forecasted number for new, used, and CPO respectively is 65,75,12. I need a formula that will calculate the daily number of units we need to sell in order to hit each forecasted goal. I'm alright with Excel, but algebra was never my strong suit.