A number divided by 4 is 124, and there is a remainder, what is the largest number.
一个数除以4商是124，有余数，这个数最大是多少．
<gadget id="calculator">124 * 4</gadget>
<output>496</output>

<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">496 + 3</gadget>
<output>499</output>

<result>499</result>