Now that this is over, you can finally resize the partition. For this, we'll delete the existing partition and create a bigger one at the same location.

Enter d to delete the partition. In this screenshot, it's number 1, in a previous one it was number 15. It might be a different one for you, make sure you get the correct one.

Enter n to create a new partition.

After entering d you'll be asked a bunch of questions.

The Partition number, First sector, and Hex code or GUID have to be the same as in the output you copy-pasted previously. Normally the default value for the First sector should be correct, but it doesn't hurt to double-check.

The default value for the Last sector will extend the partition over the remaining disk space. That's what you want, so just press enter to accept the default.