(1/(1+(1/(2+(1/(3+(1/(4+(1/5))))))))) = how much.
(1/(1+(1/(2+(1/(3+(1/(4+(1/5)))))))))=多少．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">4 + (1/5)</gadget>
<output>21/5 = around 4.2</output>

<gadget id="calculator">1 / (21/5)</gadget>
<output>5/21 = around 0.238095</output>

<gadget id="calculator">3 + (5/21)</gadget>
<output>68/21 = around 3.238095</output>

<gadget id="calculator">1 / (68/21)</gadget>
<output>21/68 = around 0.308824</output>

<gadget id="calculator">2 + (21/68)</gadget>
<output>157/68 = around 2.308824</output>

<gadget id="calculator">1 / (157/68)</gadget>
<output>68/157 = around 0.433121</output>

<gadget id="calculator">1 + (68/157)</gadget>
<output>225/157 = around 1.433121</output>

<gadget id="calculator">1 / (225/157)</gadget>
<output>157/225 = around 0.697778</output>

<result>157/225 = around 0.697778</result>