For a three-digit number, the ones and tens digits are both 0, and the hundreds digit is 4, what is its 4 times.
一个三位数，个位和十位都是0，百位是4，它的4倍是多少．
<gadget id="calculator">400 * 4</gadget>
<output>1_600</output>

<result>1_600</result>