In a division formula with a remainder, both the quotient and the divisor are 25. What is the dividend to maximize the remainder?
一个有余数的除法算式，商和除数都是25，要使余数最大，被除数是多少．
<gadget id="calculator">25 * 25</gadget>
<output>625</output>

<gadget id="calculator">25 - 1</gadget>
<output>24</output>

<gadget id="calculator">625 + 24</gadget>
<output>649</output>

<result>649</result>