(2/7) of a number is (3/4), what is this number?
一个数的(2/7)是(3/4)，这个数是多少？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">(3/4) / (2/7)</gadget>
<output>21/8 = around 2.625</output>

<result>21/8 = around 2.625</result>