Xiaopang does 28 oral calculations per minute, and Xiaoqiao does twice as many oral calculations as Xiaopang, 4 questions less. How many questions does Xiaoqiao do per minute?
小胖每分钟做28道口算，小巧每分钟做的口算题是小胖的2倍少4道，小巧每分钟做多少道题？
<gadget id="calculator">28 * 2</gadget>
<output>56</output>

<gadget id="calculator">56 - 4</gadget>
<output>52</output>

<result>52</result>