In an exam, Xiao Ming's score is 5 points higher than the average score of the class, recorded as +5 points, Xiao Hong's score is recorded as -3 points, how much more points Xiao Ming has than Xiao Hong.
在一次考试中，小明的分数比全班平均分高出5分，记作+5分，小红的分数记作-3分，小明比小红多多少分．
<gadget id="calculator">5 - 0</gadget>
<output>5</output>

<gadget id="calculator">3 - 0</gadget>
<output>3</output>

<gadget id="calculator">5 + 3</gadget>
<output>8</output>

<result>8</result>