The school holds a sports meeting. The third grade has 58 participants, the fourth grade has 5 fewer participants than the third grade, and the fifth grade has twice the total number of third and fourth grade participants. How many fifth graders are participating?
学校举行运动会．三年级有58人参赛，四年级参赛的人数比三年级少5人，五年级的参赛人数是三、四年级参赛总人数的2倍．五年级有多少人参赛？
<gadget id="calculator">58 - 5</gadget>
<output>53</output>

<gadget id="calculator">53 + 58</gadget>
<output>111</output>

<gadget id="calculator">111 * 2</gadget>
<output>222</output>

<result>222</result>