During the festival, three layers of chrysanthemums were placed around the square pool, and 10 boxes were placed on each side of the outermost layer. How many pots of chrysanthemums were placed around the pool? (Can be answered by drawing pictures)
节日里，在正方形水池边外围摆了三层菊花，最外层每边摆了10盒，这个水池四周共摆了多少盆菊花？(可通过画图帮助解答)
<gadget id="calculator">10 * 4</gadget>
<output>40</output>

<gadget id="calculator">40 - 4</gadget>
<output>36</output>

<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<gadget id="calculator">32 - 4</gadget>
<output>28</output>

<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<gadget id="calculator">24 - 4</gadget>
<output>20</output>

<gadget id="calculator">36 + 28 + 20</gadget>
<output>84</output>

<result>84</result>