ansearch

i don´t want to talk numbers up, i just want to know how it works. maybe someone can help.

let´s say ansearch gets 400k unique visitors for march.
and let´s say every unique visitor visits the site 1x a day. maybe someone using it 5x a day, someone just once a month.
average month has 30 days that´s

400000 x 30 = 12m hits

if every 3rd person hits on a sponsored link that´s

4m hits x 30cents = $1.2m

or let´s say every 10th person hits on a sponsored link

1.2m hits x 30cents = $360k

but opm says in it´s budget $56k for april.

what is wrong with my calculations????

$56k : 30cents = 186666 hits

that´s roughly half of the unique visitors
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help please