To beautify the campus, students need to place 2 potted flowers between every two pine trees among 8 pine trees. How many potted flowers should be placed in total?
同学们美化校园，要在8棵松树中，每两棵松树之间摆放2盆花，一共要摆多少盆花？
<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<gadget id="calculator">2 * 7</gadget>
<output>14</output>

<result>14</result>