Calculate $\left(\frac{1}{a}\right)^4 \cdot 2 \cdot a^4+a^{2+1-3}$ when $a=42$.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Calculate $\left(\frac{1}{a}\right)^4 \cdot 2 \cdot a^4+a^{2+1-3}$ when $a=42$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
3
Calculate $\left(\frac{1}{a}\right)^4 \cdot 2 \cdot a^4+a^{2+1-3}$ when $a=42$.
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