(1/((1/20)+(1/21)+(1/22)+…+(1/29))) What is the integer part after simplification?
(1/((1/20)+(1/21)+(1/22)+…+(1/29)))化简后整数部分是多少．
<gadget id="calculator">20 / 1</gadget>
<output>20</output>

<gadget id="calculator">10 / 20</gadget>
<output>1/2 = around 0.5</output>

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

<result>2</result>