A two-digit number, write 5 in front of it, the three-digit number formed is 25 times more than the original 6, what is the original two-digit number?
一个两位数，在它的前面写上5，所成的三位数比原来的6倍多25，原来的两位数是多少？
<gadget id="calculator">500 - 25</gadget>
<output>475</output>

<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">475 / 5</gadget>
<output>95</output>

<result>95</result>