If 12 meters is increased by 10%, what is the number of meters if it is reduced by 10 meters?
12米增加它的10%后，再减少10米是多少米．
<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">12 * (11/10)</gadget>
<output>66/5 = around 13.2</output>

<gadget id="calculator">(66/5) - 10</gadget>
<output>16/5 = around 3.2</output>

<result>16/5 = around 3.2</result>