The school selects drum players from 12 classes, and each class selects 17, and there are still 13 short. How many drum players will the school select in total?
学校在12个班中挑选鼓号队员，每个班挑选17个，还差13个，学校一共要挑选多少个鼓号队员？
<gadget id="calculator">17 * 12</gadget>
<output>204</output>

<gadget id="calculator">204 + 13</gadget>
<output>217</output>

<result>217</result>