The school held a singing competition. There were 146 participants in the middle and upper grades, 87 more than the lower grades. How many people from the whole school participated in this competition?
学校举行歌咏比赛，中高年级有146人参赛，比低年级多87人．全校共有多少人参加这次比赛？
<gadget id="calculator">146 - 87</gadget>
<output>59</output>

<gadget id="calculator">59 + 146</gadget>
<output>205</output>

<result>205</result>