What is the integer part of (1/((1/30)+(1/31)+...+(1/39)))? How many.
(1/((1/30)+(1/31)+…+(1/39)))的整数部分是多少？多少．
<gadget id="calculator">1 / 30</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">(1/30) * 10</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / (1/3)</gadget>
<output>3</output>

<result>3</result>