(1/(4-(1/(3-(1/(2-(1/3))))))).
(1/(4-(1/(3-(1/(2-(1/3)))))))．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">1 / (5/3)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">3 - (3/5)</gadget>
<output>12/5 = around 2.4</output>

<gadget id="calculator">1 / (12/5)</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">4 - (5/12)</gadget>
<output>43/12 = around 3.583333</output>

<gadget id="calculator">1 / (43/12)</gadget>
<output>12/43 = around 0.27907</output>

<result>12/43 = around 0.27907</result>