If the numbers 4, 5 and 6 are each used exactly once to replace the letters in the expression $A ( B - C )$, what is the least possible result?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
If the numbers 4, 5 and 6 are each used exactly once to replace the letters in the expression $A ( B - C )$, what is the least possible result?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
-10
If the numbers 4, 5 and 6 are each used exactly once to replace the letters in the expression $A ( B - C )$, what is the least possible result?
train