They are the Level 2's The first is the # of Market Makers on the bid with the bid price. ex... 2x.0017 The second is the # of MM's on the ask with the ask price, ex... 5x.0018
HighRad... Those numbers are from Level 2 (L2) displays. L2 shows the trading activity, broken down by individual market makers. In your example, 5x7 means that there are 5 market makers "on the bid", i.e., willing to buy stock from sellers at the current high bid price, whereas there are 7 market makers who would like to sell stock at the current high "ask" price.