Getting scratches out of wooden floors?

[StocksAndScares]

Hello,

I foolishly wheeled a piano over wooden floors today, and the floor is now all scratched! Is there any way of fixing this?

My mum told me to rub a Brazil nut (or walnut) into my wooden floor scratches and it definitely does make a difference. You need to spend some time at it but the oil from the nut helps the scratches disappear

On closer inspection, it's more of a dent that the wheels have caused. Can this be fixed?