$3$

Mrs$.$ Brooks places a market order with her broker to buy $1,000$ shares of HBCU Resource Corp. The broker buys $1,000$ shares at $$15\mathrm{.}70$ each, and sells them to Mrs$.$ Brooks at $$15\mathrm{.}86$ each. He also charges a commission of $$12\mathrm{.}00.$ What is the total dollar amount spent towards the bid$-$ask spread in this case?