There are 320 students in a certain grade, 92 of them participated in basketball games, 145 students participated in table tennis games, and 37 students participated in both basketball games and table tennis games. Then, how many people did not participate in these two games?
某年级有320人，其中参加篮球比赛的有92人，参加乒乓球比赛的有145人，既参加篮球比赛又参加乒乓球比赛的有37人，那么，有多少人没有参加这两项比赛．
<gadget id="calculator">145 - 37</gadget>
<output>108</output>

<gadget id="calculator">92 + 108</gadget>
<output>200</output>

<gadget id="calculator">320 - 200</gadget>
<output>120</output>

<result>120</result>