"There are a few clouds over there."
Translation:Tuolla on muutama pilvi.
The explanations at https://uusikielemme.fi/finnish-grammar for the partitive are really good.
And as in every other language, you have to learn the few exceptions by heart, like the word "muutama". The hints for this lesson are now online, and there is a lovely explanation under the headline "A few moos": "It’s considered to be so little that whatever there is a few of and the agreeing verb are in the singular."