On the day of the Science and Technology Festival, the science and technology works of each grade were exhibited in the science and technology room of the school. Among them, 110 were not from the first grade, and 100 were not from the second grade. There were 32 works from the first and second grade. How many works from other grades participated in the exhibition?
科技节那天，学校的科技室里展出了每个年级学生的科技作品，其中有110件不是一年级的，有100件不是二年级的，一、二年级参展的作品共有32件．其他年级参展的作品共有多少件？
<gadget id="calculator">100 - 32</gadget>
<output>68</output>

<gadget id="calculator">110 + 68</gadget>
<output>178</output>

<gadget id="calculator">178 / 2</gadget>
<output>89</output>

<result>89</result>