(7/8) of a number is (4/9), what is this number? What is the listed formula
一个数的(7/8)是(4/9)，这个数是多少？列出算式是多少
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">(4/9) / (7/8)</gadget>
<output>32/63 = around 0.507937</output>

<result>32/63 = around 0.507937</result>