In the formula 8*9, one factor is enlarged by 4 times, and the other factor is reduced by 2 times, what is the product?
在算式8*9里，一个因数扩大4倍，另一个因数缩小2倍，积是多少．
<gadget id="calculator">8 * 9</gadget>
<output>72</output>

<gadget id="calculator">72 * 2</gadget>
<output>144</output>

<result>144</result>