Column formula calculation: Divide (4/9) of a number by (2/3) to get 72, find this number.
列式计算：一个数的(4/9)除以(2/3)得72，求这个数．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">(2/3) / (4/9)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">72 * (3/2)</gadget>
<output>108</output>

<result>108</result>