Take a piece of paper, tear it into 5 small pieces for the first time, and then tear one piece of paper into 5 smaller pieces each time, how many pieces of paper are there after the 8th time.
把一张纸片，第1次把它撕成5小片，以后每次将其中1纸片撕成更小的5小片，则第8次后共有纸片多少张．
<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<gadget id="calculator">4 * 7</gadget>
<output>28</output>

<gadget id="calculator">5 + 28</gadget>
<output>33</output>

<result>33</result>