So you are offering someone with good math skills $3-6 an hour without a break.
While I agree that the payment reward is low, there are many users on the forums that would appreciate making an extra $10 per day. Given that these are math problems, extensive knowledge of the English language probably isn't a requirement, so this is perfect for third-world users of the forums to make a few extra bucks a day.
There's no need to criticize the OP for making this offering; simply ignore it if it doesn't interest you.