The product of multiplying two factors is 489. If one of the factors is enlarged to 10 times the original factor, and the other factor remains unchanged, what is the product?
两个因数相乘的积是489，如果将其中一个因数扩大到原来的10倍，另一个因数不变，积变成了多少．
<gadget id="calculator">489 * 10</gadget>
<output>4_890</output>

<result>4_890</result>