When multiplying two numbers, the product is 2.13. If one factor is enlarged by 1000 times and the other factor is reduced by 10 times, what is the product?
两个数相乘，积是2.13，如果把一个因数扩大1000倍，把另一个因数缩小10倍，积是多少．
<gadget id="calculator">1_000 / 10</gadget>
<output>100</output>

<gadget id="calculator">2.13 * 100</gadget>
<output>213</output>

<result>213</result>