The three people share a pack of biscuits on average. After each person eats 8 pieces, the total amount left by the three people is the same as what each person got at the beginning. How many pieces are there in this pack of biscuits?
三人平均分一包饼干，每人吃了8块后，三人剩下的总数与每人开始分得的一样多，这包饼干原来有多少块．
<gadget id="calculator">8 * 3</gadget>
<output>24</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">24 / 2</gadget>
<output>12</output>

<gadget id="calculator">12 * 3</gadget>
<output>36</output>

<result>36</result>