For a number, the hundreds digit is 3, the tens digit is 8, and the ones digit is the largest single digit. What is 4 times this number.
一个数，百位上是3，十位上是8，个位上是最大的一位数．这个数是的4倍是多少．
<gadget id="calculator">389 * 4</gadget>
<output>1_556</output>

<result>1_556</result>