Avoiding the comma (when entering dimensions)

Is there an extension I could install to make entering dimensions faster?

Right now if I enter:
50’ 110’
instead of
50’, 110’
I mean 50x100 feet, but get 8 inches by 160 feet.
Can extensions hook in to make shortcuts or better inferences?

I might like to default to feet or inches for example, depending on the section of a model I am working with.