A number, two-thirds of it, half of it, one-seventh of it, add up to a total of 33, then what is this number.
一个数，它的三分之二，它的一半，它的七分之一，全部加起来总共是33，则这个数是多少．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

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

<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">(2/3) + (1/2) + (1/7)</gadget>
<output>55/42 = around 1.309524</output>

<gadget id="calculator">33 / (55/42)</gadget>
<output>126/5 = around 25.2</output>

<result>126/5 = around 25.2</result>