When Kobayashi did a vertical multiplication, he regarded the "9" in the multiplicand's digit as "6"; he regarded the "6" in the multiplier's digit as "9", and after correct operation, he got The answer is 225 more than the correct answer, if the original multiplicand minus the multiplier, what is the difference
小林在做一个竖式乘法时，把被乘数个位上的"9"看成了"6"；把乘数个位上的"6"看成"9"，经过正确运算后，得到的答案比正确的答案多225，如果原来的被乘数减乘数，其差是多少
<gadget id="calculator">225 / 3</gadget>
<output>75</output>

<gadget id="calculator">75 + 3</gadget>
<output>78</output>

<result>78</result>