It is known that (2/3) of a number is (4/5), what is the formula for finding this number.
已知一个数的(2/3)是(4/5)，求这个数的算式是多少．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(4/5) / (2/3)</gadget>
<output>6/5 = around 1.2</output>

<result>6/5 = around 1.2</result>