When a number is divided by 18, the quotient is 20 and the remainder is 5. What is the number?
一个数除以18，商是20，余数是5，这个数是多少．
<gadget id="calculator">20 * 18</gadget>
<output>360</output>

<gadget id="calculator">360 + 5</gadget>
<output>365</output>

<result>365</result>