When Kobayashi calculated 12*(□+5), he miscalculated as 12*□+5. What is the difference between the number he calculated and the correct answer?
小林在计算12*(□+5)时，错算成12*□+5，他算出的得数与正确答案相差多少．
<gadget id="calculator">12 * 5</gadget>
<output>60</output>

<gadget id="calculator">60 - 5</gadget>
<output>55</output>

<result>55</result>