S-I... Six. N-I... N-E. Nine! Six by... Nine.

17 seconds sound clip from The Hitchhiker's Guide to the Galaxy (1981) - Episode 6 sitcom.

You can hear this line at 00:32:58.819 in the Blu-ray version of the TV Series.

Quote context

[...]

- Brilliant!

- Right.

- Right.

- Right, first four letters. W-H-A-T, what.

- Great. It's working.

- D-O-Y, doy.

- Doy. Doyo.

- U, G...

- Doyug.

- Ah! E-T! 'Do you get...'

- What... Do... You... Get?

- If... Y-O-U... M-U... You... Mul... T-I-P-Y.

- Multiply!

- S-I... Six. N-I... N-E. Nine! Six by... Nine.

- Is that it?

- That's it.

- Six by nine? 42?

- I always said there was something fundamentally wrong with the universe. All for that!

- Yup.

- It's very sad, you know. Just at the moment it's a very beautiful planet.

- It is. It is indeed.

- The rich, primal greens, the river snaking off into the distance, the burning forests.

[...]