A number divided by 7 is 23 with a remainder of 4. What is this number?
一个数除以7商是23余4，这个数是多少．
<gadget id="calculator">7 * 23</gadget>
<output>161</output>

<gadget id="calculator">161 + 4</gadget>
<output>165</output>

<result>165</result>