I ma trying to figure out the contribution margin ratio by product and I am dividing the contribution margin by sales and I keep coming up with the...

I ma trying to figure out the contribution margin ratio by product and I am dividing the contribution margin by sales and I keep coming up with the wrong answer. Can you help me figure out what I am doing wrong?

contribution margin of 5,088,000.0 which I am dividing by the number of sales (4,800) and I get 1060. which I know is wrong

contribution margin of 3,943,200.00 which I am dividing by the number of sales (4650) and I get 848 which i know is wrong.

What am I doing wrong here?