The school held the "Haibao" image design competition. The first grade exhibited 28 pieces, 3 more than the third grade, and the fourth grade exhibited 5 pieces less than twice the number of the third grade. How many pieces are there in the fourth grade?
学校举办"海宝"形象设计大赛，一年级参展作品28件，比三年级多3件，四年级参展作品比三年级的2倍少5件，四年级参展作品有多少件？
<gadget id="calculator">28 - 3</gadget>
<output>25</output>

<gadget id="calculator">25 * 2</gadget>
<output>50</output>

<gadget id="calculator">50 - 5</gadget>
<output>45</output>

<result>45</result>