The little sloppy mistook 70*(□+6) as 70*□+6 because of his carelessness. Please help me to calculate. How much is the difference between the result he got and the correct result?
小马虎由于粗心大意把70*(□+6)错看成70*□+6，请你帮忙算算，他得到的结果与正确的结果相差多少？
<gadget id="calculator">420 - 6</gadget>
<output>414</output>

<result>414</result>