In a certain exam, subtract 5 from Xiaohong's score, then divide by 5, then add 4, and finally multiply by 5, which is exactly equal to 100 points. Excuse me, what is Xiaohong's score?
某次考试，把小红的分数减去5，再除以5，然后加上4，最后乘5，刚好等于100分，请问，小红的分数是多少．
<gadget id="calculator">100 / 5</gadget>
<output>20</output>

<gadget id="calculator">20 - 4</gadget>
<output>16</output>

<gadget id="calculator">16 * 5</gadget>
<output>80</output>

<gadget id="calculator">80 + 5</gadget>
<output>85</output>

<result>85</result>