To find out how many roses Camilla will have to sell, you can multiply the number of boxes by the number of roses in each box.
Camilla orders 32 boxes of roses, and each box contains 24 roses:
\[ 32 \text{ boxes} \times 24 \text{ roses/box} = 768 \text{ roses} \]
Therefore, Camilla will have 768 roses to sell.