Xiao Ming scored 89 points in Chinese and 96 points in mathematics in a test. The average score of Chinese, mathematics, and science was 91 points. How many points did he score in science?
小明在一次测验中语文得了89分，数学96分，语文、数学、科学三门的平均分是91分，他科学得了多少分．
<gadget id="calculator">91 * 3</gadget>
<output>273</output>

<gadget id="calculator">273 - 89 - 96</gadget>
<output>88</output>

<result>88</result>