When a number is divided by 50, the quotient is 50. What is the number to maximize the remainder?
一个数除以50，商是50，要使余数最大，这个数是多少．
<gadget id="calculator">50 * 50</gadget>
<output>2_500</output>

<gadget id="calculator">50 - 1</gadget>
<output>49</output>

<gadget id="calculator">2_500 + 49</gadget>
<output>2_549</output>

<result>2_549</result>