What is the integer part of 1/((1/10)+(1/11)+(1/13)+(1/12)+(1/10)).
1/((1/10)+(1/11)+(1/13)+(1/12)+(1/10))的整数部分是多少．
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/10) + (1/10) + (1/10) + (1/10) + (1/10)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / (1/2)</gadget>
<output>2</output>

<result>2</result>