For a piece of wood, the full length (1/3) is cut off for the first time, and if another 1.2 meters is cut, it will be cut in half. How many meters did you saw for the first time?
一根木料，第一次锯下全长的(1/3)，如果再锯1.2米，就刚好锯一半．第一次锯了多少米？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/2) - (1/3)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1.2 / (1/6)</gadget>
<output>7.2</output>

<gadget id="calculator">7.2 * (1/3)</gadget>
<output>2.4</output>

<result>2.4</result>