When the product $(3x+2y+1)(x+4y+5)$ is expanded, what is the sum of the coefficients of the terms which contain a nonzero power of $y$?
Question:
When the product $(3x+2y+1)(x+4y+5)$ is expanded, what is the sum of the coefficients of the terms which contain a nonzero power of $y$?
Answer:
Let's think step by step.

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When the product $(3x+2y+1)(x+4y+5)$ is expanded, what is the sum of the coefficients of the terms which contain a nonzero power of $y$?
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