5.47 What is the difference between expanding it 1000 times and 1000 times?
5.47扩大它的1000倍与1000的差是多少．
<gadget id="calculator">5.47 * 1_000</gadget>
<output>5_470</output>

<gadget id="calculator">5_470 - 1_000</gadget>
<output>4_470</output>

<result>4_470</result>