In full context, it's a conversation. "What does this mean, and what does that mean, what is also related to that?" If you ask a human impressively difficult questions then an absurdly trivial one, a human will probably respond with sarcasm. I'd expect Gopher to as well. It might get the answer right if you were asking it a series of arithmetic questions.

According to the link, Gopher is far better at math than GPT-3, and GPT-3 can solve "15 x 7", so I'd assume that Gopher would be able to as well.