saturday 10 february, 2018 61818055 requests since tuesday 16 december, 2003

How would the previous sentence be correctly capitalized?
Answer: Saturday 10 February, 2018 61818055 requests since Tuesday 16 December, 2003
in the case that your usr file doesn't open, it is highly likely that you do not have the correct software application installed on your pc to view or edit usr file extensions.

How would the previous sentence be correctly capitalized?
Answer: In the case that your USR file doesn't open, it is highly likely that you do not have the correct software application installed on your PC to view or edit USR file extensions.
12 oil seeds and oleaginous fruits; miscellaneous grains, seeds and fruit; industrial or medicinal

How would the previous sentence be correctly capitalized?
Answer: 12 Oil seeds and oleaginous fruits; miscellaneous grains, seeds and fruit; industrial or medicinal
a number of products (14) were examined for a content of chlorine in the packaging material as an indication that the material was made of pvc.

How would the previous sentence be correctly capitalized?
Answer: A number of products (14) were examined for a content of chlorine in the packaging material as an indication that the material was made of PVC.