Let $a = 5 - 8i$ and $b = 30 + 48i$. Find $|ab|$.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Let $a = 5 - 8i$ and $b = 30 + 48i$. Find $|ab|$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
534
Let $a = 5 - 8i$ and $b = 30 + 48i$. Find $|ab|$.
train