When Xiaogang calculated 8*(a+5), he copied the formula into 8*a+5, so how much is the difference between the calculation results of the two questions?
小刚在计算8*(a+5)时，把算式抄成8*a+5，这样两题的计算结果相差多少
<gadget id="calculator">8 * 5</gadget>
<output>40</output>

<gadget id="calculator">40 - 5</gadget>
<output>35</output>

<result>35</result>