32 students are playing singles or doubles in front of 10 table tennis tables. How many table tennis tables are there in doubles?
32个同学正在10张乒乓球桌前进行单打或双打比赛，正在进行双打比赛的乒乓球桌有多少张？
<gadget id="calculator">10 * 2</gadget>
<output>20</output>

<gadget id="calculator">32 - 20</gadget>
<output>12</output>

<gadget id="calculator">4 - 2</gadget>
<output>2</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<result>6</result>