The same number is subtracted from the numerator and denominator of (25/41) to get a new fraction. After the new fraction is divided into (1/2), what is the subtracted number?
(25/41)的分子和分母都减去同一个数，得到一个新分数，新分数约分后是(1/2)，减去的数是多少？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) * 41</gadget>
<output>41/2 = around 20.5</output>

<gadget id="calculator">25 - (41/2)</gadget>
<output>9/2 = around 4.5</output>

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

<gadget id="calculator">(9/2) / (1/2)</gadget>
<output>9</output>

<result>9</result>