Modify a certain number of the five-digit number 31743 to get a multiple of 823, so what is the modified five-digit number?
修改五位数31743的某一个数字，可以得到823的倍数，那么，修改后的五位数是多少．
<gadget id="calculator">41 * 823</gadget>
<output>33_743</output>

<result>33_743</result>