A's number is B's (8/9), B's number is 72, what is A's number?
甲数是乙数的(8/9)，乙数是72，甲数是多少？
<gadget id="calculator">8 / 9</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">72 * (8/9)</gadget>
<output>64</output>

<result>64</result>