If the quotient of a number divided by 40 is a single digit and has a remainder, what is the largest number.
一个数除以40的商是一位数并且有余数，这个数最大是多少．
<gadget id="calculator">9 * 40</gadget>
<output>360</output>

<gadget id="calculator">40 - 1</gadget>
<output>39</output>

<gadget id="calculator">360 + 39</gadget>
<output>399</output>

<result>399</result>