Calculate two-digit numbers by two-digit numbers vertically. One factor is 25, and the little sloppy copied the "3" in the unit digit of the other factor into "2". How much is the difference between the number calculated by the little sloppy and the correct result.
列竖式计算两位数乘两位数．一个因数是25，小马虎把另一个因数个位上的"3"抄成了"2"．小马虎算得的得数和正确结果相差多少．
<gadget id="calculator">3 - 2</gadget>
<output>1</output>

<gadget id="calculator">25 * 1</gadget>
<output>25</output>

<result>25</result>