Toputthisinperspective,Mozillalistsatotalof19550add-onsonFirefoxAMOatthesametime.

To put this in perspective, Mozilla lists a total of 19550 add-ons on Firefox AMO at the same time.
[Q]: [Onceyou'vestarted,youwon'twanttostop.]
[A]: [Once you've started, you won't want to stop.]
Problem: Add spaces: Duplexapartmentwithaterraceof30sqmandaninteriorsurfaceareaofabout85sqmonthegroundfloor.

Spaces added: Duplex apartment with a terrace of 30 sq m and an interior surface area of about 85 sq m on the ground floor.
This text is missing some spaces, please add them: Hewasmiserablypoor....
He was miserably poor. ...
input question: Fix spacing: 45ManythereforeoftheJewswhocametoMaryandsawwhathehaddone,believedonhim;

output answer: 45 Many therefore of the Jews who came to Mary and saw what he had done, believed on him;
input question: Fix spacing: Andtheretheyaresittingtothisveryday.

output answer:
And there they are sitting to this very day.