There is a multiplication formula, the product is 24, if one factor is enlarged by 20 times and the other factor is reduced by 4 times, then what should be the product.
有一道乘法算式，积是24，如果一个因数扩大20倍，另一个因数缩小4倍，这时积应该是多少．
<gadget id="calculator">20 / 4</gadget>
<output>5</output>

<gadget id="calculator">24 * 5</gadget>
<output>120</output>

<result>120</result>