If the output value in the second year increases by 10% compared with the first year, and the output value in the third year increases by 10% compared with the second year, then how much does the output value increase in the third year compared with the first year?
如果第二年的产值比第一年增加10%，第三年的产值又比第二年增加10%，那么第三年的产值比第一年增加多少．
<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) * (11/10)</gadget>
<output>121/100 = around 1.21</output>

<gadget id="calculator">(121/100) - 1</gadget>
<output>21/100 = around 0.21</output>

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