Xiaoqiang took the mid-term examination of Chinese, Mathematics, and Natural Science. The average score of Chinese Liberal Arts and Mathematics is 77 points. If the total average score of the three subjects is 82 points, find the score of Natural Science.
小强参加国文、数学、自然三科期中考试，国文科及数学两科的平均分是77分，若三科的总平均分为82分，求自然科的成绩．
<gadget id="calculator">82 * 3</gadget>
<output>246</output>

<gadget id="calculator">77 * 2</gadget>
<output>154</output>

<gadget id="calculator">246 - 154</gadget>
<output>92</output>

<result>92</result>