If the side length of a cube is enlarged by 20%, its surface area will be enlarged by how much
把一个正方体的棱长扩大20%，它的表面积就扩大多少
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">1 * (6/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(6/5) * (6/5) * 6</gadget>
<output>216/25 = around 8.64</output>

<gadget id="calculator">1 * 1 * 6</gadget>
<output>6</output>

<gadget id="calculator">(216/25) - 6</gadget>
<output>66/25 = around 2.64</output>

<gadget id="calculator">(66/25) / 6</gadget>
<output>11/25 = around 0.44</output>

<result>11/25 = around 0.44</result>