There's gotta be another pattern.

-Where's Ohlm?

-Getting snacks.

And he better not come back empty-handed.

-I came back empty-handed.

-Why?!

It's not my fault your order was wrong.

My order is perfect!

Whoa, whoa, whoa!

What happened?

Orchid said to get eighteen apples and fifteen hot chocolates from the break room.

But Oksana only hands them out in groups of ten.

Orchid, does Ohlm have to get you the exact amount of snacks you want?

As long as he brings me somethin'.

[Otis] So Ohlm, just round up or down to the nearest ten.

[Ohlm] What's rounding?

[Otis] This is rounding.

Look, here's a number line from ten to twenty.

Eighteen's closer to twenty, so you can round up to twenty apples.

What about the fifteen hot chocolates?

It's right in the middle.

If a number ends in five, you give it a nudge and round up.

So fifteen becomes twenty hot chocolates.

Alright, I'll go back down there.

Ohlm, stay.

We have to focus.

If we don't solve this, you're both going back to the Academy.

[♪♪♪] Alright.

We looked at shapes.

Why don't we look at numbers?

The villain stole two of these, four of these, two of these, and four of these.

The villain is only stealing even numbers!

Even what?

An even number's an number that can be equally split into two groups.

And four and two are both even.

We did it!

We solved the case!

No, we didn't solve it.

This is just a good clue.

I know who did it.

Please don't make up another villain.

I got nothin' then.

I've an idea-- Even Steven.

He loves even numbers!

Looks like we have to pay him a visit.

[♪♪♪]