I believe it should be $3
You would need to divide 6.60 and 2⅕
You could use a calculator and divide 6.60 and 2.2 (2⅕) to get 3 or divide by using fractions.
Make both 6.60 (6 6/10) and 2⅕ into improper fractions
66/10 ÷ 11/5
Turn it into a multiplication problem and flip 11/5
66/10 × 5/11
Multiply across then divide or simplify
330/110 = 3
So $3 would be your answer
Hope this helps!