When a student calculated 4.6+7.2, he miscalculated as 4.6+72. Compared with the correct result, what is the difference?
一个同学在计算4.6+7.2时，错算成了4.6+72，这样算得的结果和正确结果相比，有什么变化？
<gadget id="calculator">72 - 7.2</gadget>
<output>64.8</output>

<result>64.8</result>