A piece of square paper with a side length of 6 decimeters can be made into a right-angled triangle flag with a side length of 20 centimeters. How many sides can be made in total?
一张边长是6分米的正方形纸，做成一种直角边都是20厘米的直角三角形小旗，一共可以做多少面？
<gadget id="calculator">20 / 10</gadget>
<output>2</output>

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

<gadget id="calculator">2 * 1</gadget>
<output>2</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<result>18</result>