Since web pages arent static it is a good idea to keep track of which version of the original a certain translation refers to and to use this information to check which pages have changed since the last translation

Can you repeat this sentence, but add in punctuation?
Since web pages aren't static, it is a good idea to keep track of which version of the original a certain translation refers to, and to use this information to check which pages have changed since the last translation.
Experts have even compared the importance of Hirudin together with the pharmaceutical agents in its saliva to that of penicillin having of course a completely different range of effects

Can you repeat this sentence, but add in punctuation?
Experts have even compared the importance of Hirudin, together with the pharmaceutical agents in its saliva, to that of penicillin, having, of course, a completely different range of effects.
He could not compute

Can you repeat this sentence, but add in punctuation?
He could not compute.