Can you help me solve these?

Answer:
a) 224 oz
b) 96 oz
Step-by-step explanation:
first you multiply 7 by 32 to get 224oz
then you subtract 4 from 7 which is 3 and thats how many she has left but the question is asking for the weight of this so you multiply 3 by 32 and the answer is 96oz