In the formula 250*40=10000, the first multiplier is reduced to the original (1/1000), and the second multiplier is expanded to 10 times the original, what is the product at this time?
在算式250*40=10000中，第一个乘数缩小到原来的(1/1000)，第二个乘数扩大到原来的10倍，这时积是多少．
<gadget id="calculator">1 / 1_000</gadget>
<output>1/1_000 = around 0.001</output>

<gadget id="calculator">250 * (1/1_000) * 40 * 10</gadget>
<output>100</output>

<result>100</result>