Lab : VI Editor Q 5

hi

In Lab VI Editor there is question 5 which expects to replace 80 by 5000.
I replaced this by doing below

Go to command mode
Type :%s/old-string/replacement-string/g

i.e. :%s/80/5000
:w

I have manually verified that all values of 80 are correctly replaced by 5000 but still quiz does not pass or move forward .

Can you please review , recreate and confirm what is wrong .

with best regards
Pradeep Nehe

You are right and the correct solution is :

:%s/80/5000/g
:wq!