There are three students in the school competing in the high jump. Xiao Ming's jumping result is 93 cm, and Xiao Hua and Xiao Dong's jumping result is 90 cm. Calculate, what is the average jumping result of these three students in cm?
学校有三名同学进行跳高比赛，小明跳出的成绩是93厘米，小华和小东跳出的平均成绩是90厘米，算一算，这三名同学跳出的平均成绩是多少厘米？
<gadget id="calculator">90 * 2</gadget>
<output>180</output>

<gadget id="calculator">93 + 180</gadget>
<output>273</output>

<gadget id="calculator">273 / 3</gadget>
<output>91</output>

<result>91</result>