I am curious, where are you displaying the numbers? If you are displaying numbers in a dashboard, depending on the block, numbers can be formatted with the {{format}} helper which is configured with D3 formatting.
Unfortunately, the Gauge Block does not allow the attribute value to be formatted like other blocks do. I do, however, this think problem could be solved using the Custom HTML Block, which is one of my favorites after only one use! There is a great Gauge example that can be found here, and you could easily format the displayed number to your liking.