Calculation: 0.{_{70}**(•)}+0.{_{1}**(•)}-0.2{_{3}**(•)}-0.36{_{9}* *(•)}=how much.
计算：0.{_{70}**(•)}+0.{_{1}**(•)}-0.2{_{3}**(•)}-0.36{_{9}**(•)}=多少．
<gadget id="calculator">70 / 99</gadget>
<output>70/99 = around 0.707071</output>

<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">21 / 90</gadget>
<output>7/30 = around 0.233333</output>

<gadget id="calculator">333 / 900</gadget>
<output>37/100 = around 0.37</output>

<gadget id="calculator">(7/30) + (37/100)</gadget>
<output>181/300 = around 0.603333</output>

<gadget id="calculator">(1/9) - (181/300)</gadget>
<output>-443/900 = around -0.492222</output>

<gadget id="calculator">(70/99) + (-443/900)</gadget>
<output>709/3_300 = around 0.214848</output>

<result>709/3_300 = around 0.214848</result>