The fifth grade donated money to the disaster area. The first class donated 252 yuan, the second class donated more than the first class (1/7), the third class donated more than the second class (8/9), how much did the third class donate?
五年级为灾区捐款，一班捐252元，二班比一班多捐(1/7)，三班捐款数是二班的(8/9)，三班捐款多少元？
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">1 + (1/7)</gadget>
<output>8/7 = around 1.142857</output>

<gadget id="calculator">8 / 9</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">252 * (8/7) * (8/9)</gadget>
<output>256</output>

<result>256</result>