Add a number to the numerator of the fraction (9/16), subtract the same number from the denominator, and simplify the new fraction to (2/3), find this number (using two methods)
分数(9/16)的分子加上一个数，分母减去同一个数，新分数化简为(2/3)，求这个数(使用两种方法)
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) * 16</gadget>
<output>32/3 = around 10.666667</output>

<gadget id="calculator">(32/3) - 9</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">9 + 16</gadget>
<output>25</output>

<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">25 / 5</gadget>
<output>5</output>

<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<gadget id="calculator">10 - 9</gadget>
<output>1</output>

<gadget id="calculator">1 + (2/3)</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">(5/3) / (5/3)</gadget>
<output>1</output>

<result>1</result>