Over the course of two decades around 500000 prisoners worked there in intensely cold weather suffering starvation while forced to work on the construction of the mines the factories and the city itself

Can you repeat this sentence, but add in punctuation?
Over the course of two decades, around 500,000 prisoners worked there in intensely cold weather, suffering starvation while forced to work on the construction of the mines, the factories, and the city itself.
Complexity Metrics are more complex than size metrics

Can you repeat this sentence, but add in punctuation?
Complexity Metrics are more complex than size metrics.
If returning an item in an order that was paid in whole or in part using Rewards Credit the return will be processed in accordance with our Return Policy

Can you repeat this sentence, but add in punctuation?
If returning an item in an order that was paid in whole or in part using Rewards & Credit, the return will be processed in accordance with our Return Policy.