Here are Karl Toko Ekambi's two goals that settled this tie.

This is the end of this live text now.

Come back to the BBC Sport website at 18:45 GMT for the second quarter-final between Burkina Faso and Tunisia.

Follow Sheffield United v Peterborough until then if you'd like.

Cameroon's semi-final against Egypt or Morocco is on Thursday.

We'll leave you with the goals.

Cameroon have the top two scorers in the Africa Cup of Nations - Vincent Aboubakar (six) and Karl Toko Ekambi (five).

Nobody else has scored for them in this tournament.

Efan Ekoku
Former Premier League striker on BBC Radio 5 live

Cameroon march on looking to add another Africa Cup of Nations title. They will be tough to beat.

It's been a good performance.

The Gambia players can now go back to their various lower league clubs around Europe, including Forest Green and Salford.

A couple of their players don't even have clubs to go back to.

Which tells you what an achievement this was.

The Gambia, who are ranked 150th in the world, did so well to get this far in their first ever major tournament.

But they were deservedly beaten today.

It's all over.

Hosts Cameroon cruise into the semi-finals where they will play Egypt or Morocco on Thursday.

Vincent Aboubakar has a shot blocked, this is set to be the first game of Afcon he hasn't scored in.

Efan Ekoku
Former Premier League striker on BBC Radio 5 live

There hasn't been an element of danger for Cameroon in defence. It's been a stroll.

Cameroon are just cruising to the final whistle.

Three minutes added on as Cameroon win a free-kick.

Anyway we're into the final minute. This was over a long time ago.

Play restarts. That was all very strange. Maybe the referee hadn't realised the player had already come off.

Cameroon are furious. They are making a double change but the referee only lets one of them on - Yvan Neyou.

Play restarts before Christian Bassogog is allowed on. He's replacing Moumi Ngamaleu, who is already off the pitch injured.

He eventually comes on but now the officials are engaged in conversation. Big confusion here.

It should be 3-0. Clinton N'Jie runs onto a long ball from the keeper and tries to lob the keeper, who is on the edge of his box. It's saved and Vincent Aboubakar lashes over the rebound.

Another sub as Cameroon bring on Olivier Mbaizo for the injured Collins Fai.

Oh look, another sub. The Gambia bring on Assan Ceesay for Noah Sonko Sundberg.

Efan Ekoku
Former Premier League striker on BBC Radio 5 live

It was a pretty impressive brace. I'm sure Toko Ekambi won't mind not having the chance to get a hat-trick. He will want one in the semi-final.

The Gambia bring on Bubacarr Jobe for Sulayman Marreh.

Cameroon bring on Clinton N'Jie and Pierre Kunde (I wrote this five minutes ago and this is the first chance they've had to come on) for brace bagger Karl Toko Ekambi and Martin Hongla.

Talk of energy-saver mode takes me back to the good old days of Windows 95.