simplest fraction, the sum of numerator and denominator is 166, if 3 is added to the numerator and 1 is subtracted from the denominator, the new fraction is simplified to (5/16), and the original fraction is ((())/(()) ).
一个最简分数，分子、分母之和为166，如果分子加上3，分母减去1后，新分数化简后是(5/16)，原分数是((())/(()))．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">166 + 2</gadget>
<output>168</output>

<gadget id="calculator">16 + 5</gadget>
<output>21</output>

<gadget id="calculator">5 / 21</gadget>
<output>5/21 = around 0.238095</output>

<gadget id="calculator">168 * (5/21)</gadget>
<output>40</output>

<gadget id="calculator">40 - 3</gadget>
<output>37</output>

<gadget id="calculator">168 - 40</gadget>
<output>128</output>

<gadget id="calculator">128 + 1</gadget>
<output>129</output>

<gadget id="calculator">37 / 129</gadget>
<output>37/129 = around 0.286822</output>

<result>37/129 = around 0.286822</result>