If the base and height of the triangle are increased by 10%, how much will the area of the new triangle increase compared to the area of the original triangle?
三角形的底、高增加10%，那么新三角形面积比原三角形面积增加多少
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 + (1/10)</gadget>
<output>11/10 = around 1.1</output>

<gadget id="calculator">(11/10) / 2</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">(11/10) * (11/20)</gadget>
<output>121/200 = around 0.605</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 * (1/2)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(121/200) - (1/2)</gadget>
<output>21/200 = around 0.105</output>

<gadget id="calculator">(21/200) / (1/2)</gadget>
<output>21/100 = around 0.21</output>

<result>21/100 = around 0.21</result>