One bag of toy animals weighs 12 ounces.what is the total weight,in ounces of the bags of toy animals

the complete question in the attached figure

Part A) What is the total number of toy animals in one crate?
we know that
in 1 bag-----------> 36 toy animals
in 1 box-----------> 48 bags--------> 48*36------> 1728 toy animals
in 1 crate---------> 18 boxes-------> 18*1728----> 31104 toy animals

the answer Part A) is
31104 toy animals in one crate

Part B) One bag of toy animals weighs 12 ounces. What is the total weight, in ounces, of the bags of toy animals in one crate?
we know that
 1 bag-----------> weighs 12 ounces
 1 box-----------> 48 bags--------> 48*12------> 576 ounces
i1 crate---------> 18 boxes-------> 18*576----> 10368 ounces

the answer Part B) is 
10368 ounces