Please write the result of the formula 0.{_{1}**(•)}+0.0{_{1}**(•)}+0.00{_{1}**(•)} into the simplest fraction.
请将算式0.{_{1}**(•)}+0.0{_{1}**(•)}+0.00{_{1}**(•)}的结果写成最简分数．
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">1 / 90</gadget>
<output>1/90 = around 0.011111</output>

<gadget id="calculator">1 / 900</gadget>
<output>1/900 = around 0.001111</output>

<gadget id="calculator">(1/9) + (1/90) + (1/900)</gadget>
<output>37/300 = around 0.123333</output>

<result>37/300 = around 0.123333</result>