There were five questions in a Chinese competition. Ding Yi got 16 points for getting 1, 2, and 3 right; Yu Shan got 25 points for getting 2, 3, and 4 right; Wang Shui only got 25 points for getting right. Questions 3, 4, and 5 scored 28 points. Li Qiang got 30 points for answering questions (1, 4, and 5). Zhang Can only got 21 points for answering questions 1, 2, and 5. Li Ming got five points. How many points did he get for correct questions?
某次语文竞赛共有五道题，丁一只做对了1、2、3三题得了16分；于山只做对了2、3、4三题，得了25分；王水只做对了3、4、5三题，得了28分，李强做对了(1,4,5)题得了30分，张灿只做对了1、2、5三题，得了21分，李明五个题都对了他得了多少分？
<gadget id="calculator">16 + 25 + 30 + 28 + 21</gadget>
<output>120</output>

<gadget id="calculator">120 / 3</gadget>
<output>40</output>

<result>40</result>