So, you need to find the total cost of the three toy cards plus the shipping fee.
1 car = $3.83
Shipping fee - $4.55
There are 3 cars
$3.83 (price per car) x 3 (cars) = $11.49 (total)
Now you need to add the shipping fee since the shipping fee was "added to the total cost".
$11.49 (total 3x toy cars) + $4.55 (shipping) = $16.04 (total + shipping)
The two girls shared the total cost equally (total cost = $16.04)
$16.04 (total cost) ÷ 2 (girls) = $8.02
Each girl paid $8.02