The little sloppy miscalculated 40*(□+3) into 40*□+3. Please help me to calculate. How much is the difference between the result he got and the correct result?
小马虎把40*(□+3)错算成了40*□+3，请你帮忙算一算，他得到的结果与正确结果相差多少？
<gadget id="calculator">40 * 3</gadget>
<output>120</output>

<gadget id="calculator">120 - 3</gadget>
<output>117</output>

<result>117</result>